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Finding the Fourth Proportional to 242,636.25, 334,841.67 and 140,669.40

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Solution

The fourth proportional to 242,636.25, 334,841.67 and 140,669.40 is: 194,125.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,636.25 : 334,841.67 = 140,669.40 : x
  2. Step 2: Convert to fraction form
    242,636.25/334,841.67 = 140,669.40/x
  3. Step 3: Cross multiply
    242,636.25x = 334,841.67 × 140,669.40
  4. Step 4: Simplify right side
    242,636.25x = 47,101,976,813.90
  5. Step 5: Solve for x
    x = 47,101,976,813.90/242,636.25
  6. Step 6: Final answer
    x = 194,125.89

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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.