Home / 260,046.10-390,069.15-102,279.70

Finding the Fourth Proportional to 260,046.10, 390,069.15 and 102,279.70

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Solution

The fourth proportional to 260,046.10, 390,069.15 and 102,279.70 is: 153,419.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,046.10 : 390,069.15 = 102,279.70 : x
  2. Step 2: Convert to fraction form
    260,046.10/390,069.15 = 102,279.70/x
  3. Step 3: Cross multiply
    260,046.10x = 390,069.15 × 102,279.70
  4. Step 4: Simplify right side
    260,046.10x = 39,896,155,641.26
  5. Step 5: Solve for x
    x = 39,896,155,641.26/260,046.10
  6. Step 6: Final answer
    x = 153,419.55

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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.