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Finding the Fourth Proportional to 247,347.18, 371,047.50 and 78,827.90

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Solution

The fourth proportional to 247,347.18, 371,047.50 and 78,827.90 is: 118,250.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,347.18 : 371,047.50 = 78,827.90 : x
  2. Step 2: Convert to fraction form
    247,347.18/371,047.50 = 78,827.90/x
  3. Step 3: Cross multiply
    247,347.18x = 371,047.50 × 78,827.90
  4. Step 4: Simplify right side
    247,347.18x = 29,248,893,370.01
  5. Step 5: Solve for x
    x = 29,248,893,370.01/247,347.18
  6. Step 6: Final answer
    x = 118,250.36

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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.