Home / 278,472.09-384,281.20-151,144.95

Finding the Fourth Proportional to 278,472.09, 384,281.20 and 151,144.95

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Solution

The fourth proportional to 278,472.09, 384,281.20 and 151,144.95 is: 208,574.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,472.09 : 384,281.20 = 151,144.95 : x
  2. Step 2: Convert to fraction form
    278,472.09/384,281.20 = 151,144.95/x
  3. Step 3: Cross multiply
    278,472.09x = 384,281.20 × 151,144.95
  4. Step 4: Simplify right side
    278,472.09x = 58,082,162,759.94
  5. Step 5: Solve for x
    x = 58,082,162,759.94/278,472.09
  6. Step 6: Final answer
    x = 208,574.45

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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.