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Finding the Fourth Proportional to 358,195.20, 537,681.60 and 279,657.60

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Solution

The fourth proportional to 358,195.20, 537,681.60 and 279,657.60 is: 419,789.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,195.20 : 537,681.60 = 279,657.60 : x
  2. Step 2: Convert to fraction form
    358,195.20/537,681.60 = 279,657.60/x
  3. Step 3: Cross multiply
    358,195.20x = 537,681.60 × 279,657.60
  4. Step 4: Simplify right side
    358,195.20x = 150,366,745,820.16
  5. Step 5: Solve for x
    x = 150,366,745,820.16/358,195.20
  6. Step 6: Final answer
    x = 419,789.95

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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.