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Finding the Fourth Proportional to 434,527.70, 651,840.15 and 135,005.90

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Solution

The fourth proportional to 434,527.70, 651,840.15 and 135,005.90 is: 202,523.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,527.70 : 651,840.15 = 135,005.90 : x
  2. Step 2: Convert to fraction form
    434,527.70/651,840.15 = 135,005.90/x
  3. Step 3: Cross multiply
    434,527.70x = 651,840.15 × 135,005.90
  4. Step 4: Simplify right side
    434,527.70x = 88,002,266,106.89
  5. Step 5: Solve for x
    x = 88,002,266,106.89/434,527.70
  6. Step 6: Final answer
    x = 202,523.95

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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.