Home / 292,276.40-438,431.61-81,930.74

Finding the Fourth Proportional to 292,276.40, 438,431.61 and 81,930.74

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Solution

The fourth proportional to 292,276.40, 438,431.61 and 81,930.74 is: 122,900.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,276.40 : 438,431.61 = 81,930.74 : x
  2. Step 2: Convert to fraction form
    292,276.40/438,431.61 = 81,930.74/x
  3. Step 3: Cross multiply
    292,276.40x = 438,431.61 × 81,930.74
  4. Step 4: Simplify right side
    292,276.40x = 35,921,024,054.53
  5. Step 5: Solve for x
    x = 35,921,024,054.53/292,276.40
  6. Step 6: Final answer
    x = 122,900.87

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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.