Home / 278,292.15-416,881.75-128,327.13

Finding the Fourth Proportional to 278,292.15, 416,881.75 and 128,327.13

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Solution

The fourth proportional to 278,292.15, 416,881.75 and 128,327.13 is: 192,234.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,292.15 : 416,881.75 = 128,327.13 : x
  2. Step 2: Convert to fraction form
    278,292.15/416,881.75 = 128,327.13/x
  3. Step 3: Cross multiply
    278,292.15x = 416,881.75 × 128,327.13
  4. Step 4: Simplify right side
    278,292.15x = 53,497,238,526.88
  5. Step 5: Solve for x
    x = 53,497,238,526.88/278,292.15
  6. Step 6: Final answer
    x = 192,234.09

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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.