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Finding the Fourth Proportional to 487,491.01, 731,238.83 and 127,661.17

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Solution

The fourth proportional to 487,491.01, 731,238.83 and 127,661.17 is: 191,492.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,491.01 : 731,238.83 = 127,661.17 : x
  2. Step 2: Convert to fraction form
    487,491.01/731,238.83 = 127,661.17/x
  3. Step 3: Cross multiply
    487,491.01x = 731,238.83 × 127,661.17
  4. Step 4: Simplify right side
    487,491.01x = 93,350,804,305.25
  5. Step 5: Solve for x
    x = 93,350,804,305.25/487,491.01
  6. Step 6: Final answer
    x = 191,492.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.