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Finding the Fourth Proportional to 487,240.12, 672,396.15 and 272,391.94

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Solution

The fourth proportional to 487,240.12, 672,396.15 and 272,391.94 is: 375,903.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,240.12 : 672,396.15 = 272,391.94 : x
  2. Step 2: Convert to fraction form
    487,240.12/672,396.15 = 272,391.94/x
  3. Step 3: Cross multiply
    487,240.12x = 672,396.15 × 272,391.94
  4. Step 4: Simplify right side
    487,240.12x = 183,155,291,747.03
  5. Step 5: Solve for x
    x = 183,155,291,747.03/487,240.12
  6. Step 6: Final answer
    x = 375,903.55

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.