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Finding the Fourth Proportional to 278,126.40, 416,882.40 and 153,556.80

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Solution

The fourth proportional to 278,126.40, 416,882.40 and 153,556.80 is: 230,165.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,126.40 : 416,882.40 = 153,556.80 : x
  2. Step 2: Convert to fraction form
    278,126.40/416,882.40 = 153,556.80/x
  3. Step 3: Cross multiply
    278,126.40x = 416,882.40 × 153,556.80
  4. Step 4: Simplify right side
    278,126.40x = 64,015,127,320.32
  5. Step 5: Solve for x
    x = 64,015,127,320.32/278,126.40
  6. Step 6: Final answer
    x = 230,165.59

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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.