Home / 278,476.19-384,265.18-155,951.47

Finding the Fourth Proportional to 278,476.19, 384,265.18 and 155,951.47

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Solution

The fourth proportional to 278,476.19, 384,265.18 and 155,951.47 is: 215,195.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,476.19 : 384,265.18 = 155,951.47 : x
  2. Step 2: Convert to fraction form
    278,476.19/384,265.18 = 155,951.47/x
  3. Step 3: Cross multiply
    278,476.19x = 384,265.18 × 155,951.47
  4. Step 4: Simplify right side
    278,476.19x = 59,926,719,690.81
  5. Step 5: Solve for x
    x = 59,926,719,690.81/278,476.19
  6. Step 6: Final answer
    x = 215,195.13

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1.5x scale

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.