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Finding the Fourth Proportional to 399,576.38, 598,407.08 and 291,215.32

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Solution

The fourth proportional to 399,576.38, 598,407.08 and 291,215.32 is: 436,125.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,576.38 : 598,407.08 = 291,215.32 : x
  2. Step 2: Convert to fraction form
    399,576.38/598,407.08 = 291,215.32/x
  3. Step 3: Cross multiply
    399,576.38x = 598,407.08 × 291,215.32
  4. Step 4: Simplify right side
    399,576.38x = 174,265,307,568.94
  5. Step 5: Solve for x
    x = 174,265,307,568.94/399,576.38
  6. Step 6: Final answer
    x = 436,125.14

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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.