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Finding the Fourth Proportional to 210,853.20, 316,425.60 and 151,731.30

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Solution

The fourth proportional to 210,853.20, 316,425.60 and 151,731.30 is: 227,701.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,853.20 : 316,425.60 = 151,731.30 : x
  2. Step 2: Convert to fraction form
    210,853.20/316,425.60 = 151,731.30/x
  3. Step 3: Cross multiply
    210,853.20x = 316,425.60 × 151,731.30
  4. Step 4: Simplify right side
    210,853.20x = 48,011,667,641.28
  5. Step 5: Solve for x
    x = 48,011,667,641.28/210,853.20
  6. Step 6: Final answer
    x = 227,701.87

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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.