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Finding the Fourth Proportional to 307,996.74, 425,031.02 and 172,032.62

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Solution

The fourth proportional to 307,996.74, 425,031.02 and 172,032.62 is: 237,402.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,996.74 : 425,031.02 = 172,032.62 : x
  2. Step 2: Convert to fraction form
    307,996.74/425,031.02 = 172,032.62/x
  3. Step 3: Cross multiply
    307,996.74x = 425,031.02 × 172,032.62
  4. Step 4: Simplify right side
    307,996.74x = 73,119,196,966.55
  5. Step 5: Solve for x
    x = 73,119,196,966.55/307,996.74
  6. Step 6: Final answer
    x = 237,402.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.