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Finding the Fourth Proportional to 276,987.12, 382,218.12 and 162,281.40

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Solution

The fourth proportional to 276,987.12, 382,218.12 and 162,281.40 is: 223,934.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,987.12 : 382,218.12 = 162,281.40 : x
  2. Step 2: Convert to fraction form
    276,987.12/382,218.12 = 162,281.40/x
  3. Step 3: Cross multiply
    276,987.12x = 382,218.12 × 162,281.40
  4. Step 4: Simplify right side
    276,987.12x = 62,026,891,618.97
  5. Step 5: Solve for x
    x = 62,026,891,618.97/276,987.12
  6. Step 6: Final answer
    x = 223,934.21

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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.