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Finding the Fourth Proportional to 487,440.95, 672,655.91 and 269,643.93

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Solution

The fourth proportional to 487,440.95, 672,655.91 and 269,643.93 is: 372,101.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,440.95 : 672,655.91 = 269,643.93 : x
  2. Step 2: Convert to fraction form
    487,440.95/672,655.91 = 269,643.93/x
  3. Step 3: Cross multiply
    487,440.95x = 672,655.91 × 269,643.93
  4. Step 4: Simplify right side
    487,440.95x = 181,377,581,761.91
  5. Step 5: Solve for x
    x = 181,377,581,761.91/487,440.95
  6. Step 6: Final answer
    x = 372,101.65

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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.