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Finding the Fourth Proportional to 171,655.20, 257,507.10 and 53,314.20

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Solution

The fourth proportional to 171,655.20, 257,507.10 and 53,314.20 is: 79,978.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,655.20 : 257,507.10 = 53,314.20 : x
  2. Step 2: Convert to fraction form
    171,655.20/257,507.10 = 53,314.20/x
  3. Step 3: Cross multiply
    171,655.20x = 257,507.10 × 53,314.20
  4. Step 4: Simplify right side
    171,655.20x = 13,728,785,030.82
  5. Step 5: Solve for x
    x = 13,728,785,030.82/171,655.20
  6. Step 6: Final answer
    x = 79,978.85

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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.