Home / 278,901.60-384,887.18-151,577.20

Finding the Fourth Proportional to 278,901.60, 384,887.18 and 151,577.20

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Solution

The fourth proportional to 278,901.60, 384,887.18 and 151,577.20 is: 209,178.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,901.60 : 384,887.18 = 151,577.20 : x
  2. Step 2: Convert to fraction form
    278,901.60/384,887.18 = 151,577.20/x
  3. Step 3: Cross multiply
    278,901.60x = 384,887.18 × 151,577.20
  4. Step 4: Simplify right side
    278,901.60x = 58,340,121,060.30
  5. Step 5: Solve for x
    x = 58,340,121,060.30/278,901.60
  6. Step 6: Final answer
    x = 209,178.15

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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.