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Finding the Fourth Proportional to 171,492.47, 257,238.80 and 71,598.21

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Solution

The fourth proportional to 171,492.47, 257,238.80 and 71,598.21 is: 107,397.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,492.47 : 257,238.80 = 71,598.21 : x
  2. Step 2: Convert to fraction form
    171,492.47/257,238.80 = 71,598.21/x
  3. Step 3: Cross multiply
    171,492.47x = 257,238.80 × 71,598.21
  4. Step 4: Simplify right side
    171,492.47x = 18,417,837,622.55
  5. Step 5: Solve for x
    x = 18,417,837,622.55/171,492.47
  6. Step 6: Final answer
    x = 107,397.35

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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.