Home / 245,591.28-338,890.35-138,152.18

Finding the Fourth Proportional to 245,591.28, 338,890.35 and 138,152.18

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Solution

The fourth proportional to 245,591.28, 338,890.35 and 138,152.18 is: 190,635.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,591.28 : 338,890.35 = 138,152.18 : x
  2. Step 2: Convert to fraction form
    245,591.28/338,890.35 = 138,152.18/x
  3. Step 3: Cross multiply
    245,591.28x = 338,890.35 × 138,152.18
  4. Step 4: Simplify right side
    245,591.28x = 46,818,438,939.01
  5. Step 5: Solve for x
    x = 46,818,438,939.01/245,591.28
  6. Step 6: Final answer
    x = 190,635.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.