Home / 210,306.72-315,475.20-66,200.16

Finding the Fourth Proportional to 210,306.72, 315,475.20 and 66,200.16

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Solution

The fourth proportional to 210,306.72, 315,475.20 and 66,200.16 is: 99,305.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,306.72 : 315,475.20 = 66,200.16 : x
  2. Step 2: Convert to fraction form
    210,306.72/315,475.20 = 66,200.16/x
  3. Step 3: Cross multiply
    210,306.72x = 315,475.20 × 66,200.16
  4. Step 4: Simplify right side
    210,306.72x = 20,884,508,716.03
  5. Step 5: Solve for x
    x = 20,884,508,716.03/210,306.72
  6. Step 6: Final answer
    x = 99,305.00

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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.