Home / 487,197.17-672,330.12-272,337.11

Finding the Fourth Proportional to 487,197.17, 672,330.12 and 272,337.11

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Solution

The fourth proportional to 487,197.17, 672,330.12 and 272,337.11 is: 375,824.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,197.17 : 672,330.12 = 272,337.11 : x
  2. Step 2: Convert to fraction form
    487,197.17/672,330.12 = 272,337.11/x
  3. Step 3: Cross multiply
    487,197.17x = 672,330.12 × 272,337.11
  4. Step 4: Simplify right side
    487,197.17x = 183,100,438,485.10
  5. Step 5: Solve for x
    x = 183,100,438,485.10/487,197.17
  6. Step 6: Final answer
    x = 375,824.10

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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.