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Finding the Fourth Proportional to 210,400.44, 315,483.90 and 70,082.52

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Solution

The fourth proportional to 210,400.44, 315,483.90 and 70,082.52 is: 105,084.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,400.44 : 315,483.90 = 70,082.52 : x
  2. Step 2: Convert to fraction form
    210,400.44/315,483.90 = 70,082.52/x
  3. Step 3: Cross multiply
    210,400.44x = 315,483.90 × 70,082.52
  4. Step 4: Simplify right side
    210,400.44x = 22,109,906,731.43
  5. Step 5: Solve for x
    x = 22,109,906,731.43/210,400.44
  6. Step 6: Final answer
    x = 105,084.89

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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.