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Finding the Fourth Proportional to 667,366.32, 921,130.32 and 381,052.50

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Solution

The fourth proportional to 667,366.32, 921,130.32 and 381,052.50 is: 525,946.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,366.32 : 921,130.32 = 381,052.50 : x
  2. Step 2: Convert to fraction form
    667,366.32/921,130.32 = 381,052.50/x
  3. Step 3: Cross multiply
    667,366.32x = 921,130.32 × 381,052.50
  4. Step 4: Simplify right side
    667,366.32x = 350,999,011,261.80
  5. Step 5: Solve for x
    x = 350,999,011,261.80/667,366.32
  6. Step 6: Final answer
    x = 525,946.55

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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.