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Finding the Fourth Proportional to 487,240.56, 672,396.96 and 272,392.56

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Solution

The fourth proportional to 487,240.56, 672,396.96 and 272,392.56 is: 375,904.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,240.56 : 672,396.96 = 272,392.56 : x
  2. Step 2: Convert to fraction form
    487,240.56/672,396.96 = 272,392.56/x
  3. Step 3: Cross multiply
    487,240.56x = 672,396.96 × 272,392.56
  4. Step 4: Simplify right side
    487,240.56x = 183,155,929,270.62
  5. Step 5: Solve for x
    x = 183,155,929,270.62/487,240.56
  6. Step 6: Final answer
    x = 375,904.52

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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.