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Finding the Fourth Proportional to 286,987.28, 396,047.76 and 159,674.72

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Solution

The fourth proportional to 286,987.28, 396,047.76 and 159,674.72 is: 220,354.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,987.28 : 396,047.76 = 159,674.72 : x
  2. Step 2: Convert to fraction form
    286,987.28/396,047.76 = 159,674.72/x
  3. Step 3: Cross multiply
    286,987.28x = 396,047.76 × 159,674.72
  4. Step 4: Simplify right side
    286,987.28x = 63,238,815,184.63
  5. Step 5: Solve for x
    x = 63,238,815,184.63/286,987.28
  6. Step 6: Final answer
    x = 220,354.07

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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.