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Finding the Fourth Proportional to 243,191.61, 335,569.71 and 135,759.29

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Solution

The fourth proportional to 243,191.61, 335,569.71 and 135,759.29 is: 187,328.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,191.61 : 335,569.71 = 135,759.29 : x
  2. Step 2: Convert to fraction form
    243,191.61/335,569.71 = 135,759.29/x
  3. Step 3: Cross multiply
    243,191.61x = 335,569.71 × 135,759.29
  4. Step 4: Simplify right side
    243,191.61x = 45,556,703,897.26
  5. Step 5: Solve for x
    x = 45,556,703,897.26/243,191.61
  6. Step 6: Final answer
    x = 187,328.44

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1.5x scale

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.