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Finding the Fourth Proportional to 172,219.80, 258,348.54 and 58,449.74

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Solution

The fourth proportional to 172,219.80, 258,348.54 and 58,449.74 is: 87,681.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,219.80 : 258,348.54 = 58,449.74 : x
  2. Step 2: Convert to fraction form
    172,219.80/258,348.54 = 58,449.74/x
  3. Step 3: Cross multiply
    172,219.80x = 258,348.54 × 58,449.74
  4. Step 4: Simplify right side
    172,219.80x = 15,100,403,700.64
  5. Step 5: Solve for x
    x = 15,100,403,700.64/172,219.80
  6. Step 6: Final answer
    x = 87,681.00

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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.