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Finding the Fourth Proportional to 291,365.13, 437,047.06 and 91,702.97

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Solution

The fourth proportional to 291,365.13, 437,047.06 and 91,702.97 is: 137,554.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,365.13 : 437,047.06 = 91,702.97 : x
  2. Step 2: Convert to fraction form
    291,365.13/437,047.06 = 91,702.97/x
  3. Step 3: Cross multiply
    291,365.13x = 437,047.06 × 91,702.97
  4. Step 4: Simplify right side
    291,365.13x = 40,078,513,431.77
  5. Step 5: Solve for x
    x = 40,078,513,431.77/291,365.13
  6. Step 6: Final answer
    x = 137,554.26

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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.