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Finding the Fourth Proportional to 559,985.70, 839,978.55 and 160,590.90

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Solution

The fourth proportional to 559,985.70, 839,978.55 and 160,590.90 is: 240,886.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,985.70 : 839,978.55 = 160,590.90 : x
  2. Step 2: Convert to fraction form
    559,985.70/839,978.55 = 160,590.90/x
  3. Step 3: Cross multiply
    559,985.70x = 839,978.55 × 160,590.90
  4. Step 4: Simplify right side
    559,985.70x = 134,892,911,325.20
  5. Step 5: Solve for x
    x = 134,892,911,325.20/559,985.70
  6. Step 6: Final answer
    x = 240,886.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.