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Finding the Fourth Proportional to 487,112.38, 672,193.95 and 266,345.64

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Solution

The fourth proportional to 487,112.38, 672,193.95 and 266,345.64 is: 367,545.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,112.38 : 672,193.95 = 266,345.64 : x
  2. Step 2: Convert to fraction form
    487,112.38/672,193.95 = 266,345.64/x
  3. Step 3: Cross multiply
    487,112.38x = 672,193.95 × 266,345.64
  4. Step 4: Simplify right side
    487,112.38x = 179,035,927,816.88
  5. Step 5: Solve for x
    x = 179,035,927,816.88/487,112.38
  6. Step 6: Final answer
    x = 367,545.43

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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.