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Finding the Fourth Proportional to 458,670.10, 688,005.15 and 121,710.10

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Solution

The fourth proportional to 458,670.10, 688,005.15 and 121,710.10 is: 182,565.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,670.10 : 688,005.15 = 121,710.10 : x
  2. Step 2: Convert to fraction form
    458,670.10/688,005.15 = 121,710.10/x
  3. Step 3: Cross multiply
    458,670.10x = 688,005.15 × 121,710.10
  4. Step 4: Simplify right side
    458,670.10x = 83,737,175,607.02
  5. Step 5: Solve for x
    x = 83,737,175,607.02/458,670.10
  6. Step 6: Final answer
    x = 182,565.15

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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.