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Finding the Fourth Proportional to 243,343.76, 335,810.88 and 135,915.35

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Solution

The fourth proportional to 243,343.76, 335,810.88 and 135,915.35 is: 187,561.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,343.76 : 335,810.88 = 135,915.35 : x
  2. Step 2: Convert to fraction form
    243,343.76/335,810.88 = 135,915.35/x
  3. Step 3: Cross multiply
    243,343.76x = 335,810.88 × 135,915.35
  4. Step 4: Simplify right side
    243,343.76x = 45,641,851,609.95
  5. Step 5: Solve for x
    x = 45,641,851,609.95/243,343.76
  6. Step 6: Final answer
    x = 187,561.22

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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.