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Finding the Fourth Proportional to 434,387.70, 651,630.15 and 134,865.90

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Solution

The fourth proportional to 434,387.70, 651,630.15 and 134,865.90 is: 202,313.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,387.70 : 651,630.15 = 134,865.90 : x
  2. Step 2: Convert to fraction form
    434,387.70/651,630.15 = 134,865.90/x
  3. Step 3: Cross multiply
    434,387.70x = 651,630.15 × 134,865.90
  4. Step 4: Simplify right side
    434,387.70x = 87,882,686,646.89
  5. Step 5: Solve for x
    x = 87,882,686,646.89/434,387.70
  6. Step 6: Final answer
    x = 202,313.94

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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.