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Finding the Fourth Proportional to 278,689.30, 384,750.57 and 183,472.79

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Solution

The fourth proportional to 278,689.30, 384,750.57 and 183,472.79 is: 253,297.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,689.30 : 384,750.57 = 183,472.79 : x
  2. Step 2: Convert to fraction form
    278,689.30/384,750.57 = 183,472.79/x
  3. Step 3: Cross multiply
    278,689.30x = 384,750.57 × 183,472.79
  4. Step 4: Simplify right side
    278,689.30x = 70,591,259,296.26
  5. Step 5: Solve for x
    x = 70,591,259,296.26/278,689.30
  6. Step 6: Final answer
    x = 253,297.35

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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.