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Finding the Fourth Proportional to 487,542.28, 672,870.66 and 272,694.28

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Solution

The fourth proportional to 487,542.28, 672,870.66 and 272,694.28 is: 376,352.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,542.28 : 672,870.66 = 272,694.28 : x
  2. Step 2: Convert to fraction form
    487,542.28/672,870.66 = 272,694.28/x
  3. Step 3: Cross multiply
    487,542.28x = 672,870.66 × 272,694.28
  4. Step 4: Simplify right side
    487,542.28x = 183,487,980,161.83
  5. Step 5: Solve for x
    x = 183,487,980,161.83/487,542.28
  6. Step 6: Final answer
    x = 376,352.96

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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.