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Finding the Fourth Proportional to 434,552.70, 651,877.65 and 135,030.90

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Solution

The fourth proportional to 434,552.70, 651,877.65 and 135,030.90 is: 202,561.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,552.70 : 651,877.65 = 135,030.90 : x
  2. Step 2: Convert to fraction form
    434,552.70/651,877.65 = 135,030.90/x
  3. Step 3: Cross multiply
    434,552.70x = 651,877.65 × 135,030.90
  4. Step 4: Simplify right side
    434,552.70x = 88,023,625,769.39
  5. Step 5: Solve for x
    x = 88,023,625,769.39/434,552.70
  6. Step 6: Final answer
    x = 202,561.45

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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.