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Finding the Fourth Proportional to 279,089.88, 385,176.54 and 156,616.02

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Solution

The fourth proportional to 279,089.88, 385,176.54 and 156,616.02 is: 216,148.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,089.88 : 385,176.54 = 156,616.02 : x
  2. Step 2: Convert to fraction form
    279,089.88/385,176.54 = 156,616.02/x
  3. Step 3: Cross multiply
    279,089.88x = 385,176.54 × 156,616.02
  4. Step 4: Simplify right side
    279,089.88x = 60,324,816,692.17
  5. Step 5: Solve for x
    x = 60,324,816,692.17/279,089.88
  6. Step 6: Final answer
    x = 216,148.35

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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.