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Finding the Fourth Proportional to 284,211.28, 392,211.64 and 156,886.96

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Solution

The fourth proportional to 284,211.28, 392,211.64 and 156,886.96 is: 216,504.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,211.28 : 392,211.64 = 156,886.96 : x
  2. Step 2: Convert to fraction form
    284,211.28/392,211.64 = 156,886.96/x
  3. Step 3: Cross multiply
    284,211.28x = 392,211.64 × 156,886.96
  4. Step 4: Simplify right side
    284,211.28x = 61,532,891,876.21
  5. Step 5: Solve for x
    x = 61,532,891,876.21/284,211.28
  6. Step 6: Final answer
    x = 216,504.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.