Home / 210,864.28-316,250.70-66,781.48

Finding the Fourth Proportional to 210,864.28, 316,250.70 and 66,781.48

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Solution

The fourth proportional to 210,864.28, 316,250.70 and 66,781.48 is: 100,157.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,864.28 : 316,250.70 = 66,781.48 : x
  2. Step 2: Convert to fraction form
    210,864.28/316,250.70 = 66,781.48/x
  3. Step 3: Cross multiply
    210,864.28x = 316,250.70 × 66,781.48
  4. Step 4: Simplify right side
    210,864.28x = 21,119,689,797.04
  5. Step 5: Solve for x
    x = 21,119,689,797.04/210,864.28
  6. Step 6: Final answer
    x = 100,157.74

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1.5x scale

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.