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Finding the Fourth Proportional to 307,996.88, 425,031.21 and 172,032.76

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Solution

The fourth proportional to 307,996.88, 425,031.21 and 172,032.76 is: 237,402.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,996.88 : 425,031.21 = 172,032.76 : x
  2. Step 2: Convert to fraction form
    307,996.88/425,031.21 = 172,032.76/x
  3. Step 3: Cross multiply
    307,996.88x = 425,031.21 × 172,032.76
  4. Step 4: Simplify right side
    307,996.88x = 73,119,291,079.86
  5. Step 5: Solve for x
    x = 73,119,291,079.86/307,996.88
  6. Step 6: Final answer
    x = 237,402.70

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1.5x scale

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.