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Finding the Fourth Proportional to 210,389.70, 315,487.35 and 92,000.10

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Solution

The fourth proportional to 210,389.70, 315,487.35 and 92,000.10 is: 137,957.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,389.70 : 315,487.35 = 92,000.10 : x
  2. Step 2: Convert to fraction form
    210,389.70/315,487.35 = 92,000.10/x
  3. Step 3: Cross multiply
    210,389.70x = 315,487.35 × 92,000.10
  4. Step 4: Simplify right side
    210,389.70x = 29,024,867,748.74
  5. Step 5: Solve for x
    x = 29,024,867,748.74/210,389.70
  6. Step 6: Final answer
    x = 137,957.65

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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.