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Finding the Fourth Proportional to 228,985.60, 343,478.40 and 60,505.60

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Solution

The fourth proportional to 228,985.60, 343,478.40 and 60,505.60 is: 90,758.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,985.60 : 343,478.40 = 60,505.60 : x
  2. Step 2: Convert to fraction form
    228,985.60/343,478.40 = 60,505.60/x
  3. Step 3: Cross multiply
    228,985.60x = 343,478.40 × 60,505.60
  4. Step 4: Simplify right side
    228,985.60x = 20,782,366,679.04
  5. Step 5: Solve for x
    x = 20,782,366,679.04/228,985.60
  6. Step 6: Final answer
    x = 90,758.40

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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.