Home / 210,442.38-315,680.04-70,200.90

Finding the Fourth Proportional to 210,442.38, 315,680.04 and 70,200.90

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Solution

The fourth proportional to 210,442.38, 315,680.04 and 70,200.90 is: 105,306.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,442.38 : 315,680.04 = 70,200.90 : x
  2. Step 2: Convert to fraction form
    210,442.38/315,680.04 = 70,200.90/x
  3. Step 3: Cross multiply
    210,442.38x = 315,680.04 × 70,200.90
  4. Step 4: Simplify right side
    210,442.38x = 22,161,022,920.04
  5. Step 5: Solve for x
    x = 22,161,022,920.04/210,442.38
  6. Step 6: Final answer
    x = 105,306.84

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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.