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Finding the Fourth Proportional to 434,561.60, 651,818.10 and 135,039.80

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Solution

The fourth proportional to 434,561.60, 651,818.10 and 135,039.80 is: 202,552.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,561.60 : 651,818.10 = 135,039.80 : x
  2. Step 2: Convert to fraction form
    434,561.60/651,818.10 = 135,039.80/x
  3. Step 3: Cross multiply
    434,561.60x = 651,818.10 × 135,039.80
  4. Step 4: Simplify right side
    434,561.60x = 88,021,385,860.38
  5. Step 5: Solve for x
    x = 88,021,385,860.38/434,561.60
  6. Step 6: Final answer
    x = 202,552.15

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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.