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Finding the Fourth Proportional to 309,397.70, 464,096.96 and 84,760.10

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Solution

The fourth proportional to 309,397.70, 464,096.96 and 84,760.10 is: 127,140.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,397.70 : 464,096.96 = 84,760.10 : x
  2. Step 2: Convert to fraction form
    309,397.70/464,096.96 = 84,760.10/x
  3. Step 3: Cross multiply
    309,397.70x = 464,096.96 × 84,760.10
  4. Step 4: Simplify right side
    309,397.70x = 39,336,904,053.22
  5. Step 5: Solve for x
    x = 39,336,904,053.22/309,397.70
  6. Step 6: Final answer
    x = 127,140.26

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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.