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Finding the Fourth Proportional to 258,172.60, 387,171.56 and 98,210.56

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Solution

The fourth proportional to 258,172.60, 387,171.56 and 98,210.56 is: 147,282.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,172.60 : 387,171.56 = 98,210.56 : x
  2. Step 2: Convert to fraction form
    258,172.60/387,171.56 = 98,210.56/x
  3. Step 3: Cross multiply
    258,172.60x = 387,171.56 × 98,210.56
  4. Step 4: Simplify right side
    258,172.60x = 38,024,335,723.67
  5. Step 5: Solve for x
    x = 38,024,335,723.67/258,172.60
  6. Step 6: Final answer
    x = 147,282.62

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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.