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Finding the Fourth Proportional to 171,478.16, 257,253.96 and 53,146.88

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Solution

The fourth proportional to 171,478.16, 257,253.96 and 53,146.88 is: 79,731.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,478.16 : 257,253.96 = 53,146.88 : x
  2. Step 2: Convert to fraction form
    171,478.16/257,253.96 = 53,146.88/x
  3. Step 3: Cross multiply
    171,478.16x = 257,253.96 × 53,146.88
  4. Step 4: Simplify right side
    171,478.16x = 13,672,245,341.64
  5. Step 5: Solve for x
    x = 13,672,245,341.64/171,478.16
  6. Step 6: Final answer
    x = 79,731.70

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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.