Home / 278,252.62-417,036.90-128,284.76

Finding the Fourth Proportional to 278,252.62, 417,036.90 and 128,284.76

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Solution

The fourth proportional to 278,252.62, 417,036.90 and 128,284.76 is: 192,269.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,252.62 : 417,036.90 = 128,284.76 : x
  2. Step 2: Convert to fraction form
    278,252.62/417,036.90 = 128,284.76/x
  3. Step 3: Cross multiply
    278,252.62x = 417,036.90 × 128,284.76
  4. Step 4: Simplify right side
    278,252.62x = 53,499,478,627.64
  5. Step 5: Solve for x
    x = 53,499,478,627.64/278,252.62
  6. Step 6: Final answer
    x = 192,269.45

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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.