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Finding the Fourth Proportional to 278,293.26, 417,500.37 and 91,297.74

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Solution

The fourth proportional to 278,293.26, 417,500.37 and 91,297.74 is: 136,966.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,293.26 : 417,500.37 = 91,297.74 : x
  2. Step 2: Convert to fraction form
    278,293.26/417,500.37 = 91,297.74/x
  3. Step 3: Cross multiply
    278,293.26x = 417,500.37 × 91,297.74
  4. Step 4: Simplify right side
    278,293.26x = 38,116,840,230.16
  5. Step 5: Solve for x
    x = 38,116,840,230.16/278,293.26
  6. Step 6: Final answer
    x = 136,966.45

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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.