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Finding the Fourth Proportional to 236,555.61, 354,702.13 and 78,697.89

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Solution

The fourth proportional to 236,555.61, 354,702.13 and 78,697.89 is: 118,003.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,555.61 : 354,702.13 = 78,697.89 : x
  2. Step 2: Convert to fraction form
    236,555.61/354,702.13 = 78,697.89/x
  3. Step 3: Cross multiply
    236,555.61x = 354,702.13 × 78,697.89
  4. Step 4: Simplify right side
    236,555.61x = 27,914,309,209.51
  5. Step 5: Solve for x
    x = 27,914,309,209.51/236,555.61
  6. Step 6: Final answer
    x = 118,003.16

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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.