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Finding the Fourth Proportional to 489,261.80, 733,892.70 and 156,871.40

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Solution

The fourth proportional to 489,261.80, 733,892.70 and 156,871.40 is: 235,307.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,261.80 : 733,892.70 = 156,871.40 : x
  2. Step 2: Convert to fraction form
    489,261.80/733,892.70 = 156,871.40/x
  3. Step 3: Cross multiply
    489,261.80x = 733,892.70 × 156,871.40
  4. Step 4: Simplify right side
    489,261.80x = 115,126,775,298.78
  5. Step 5: Solve for x
    x = 115,126,775,298.78/489,261.80
  6. Step 6: Final answer
    x = 235,307.10

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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.