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Finding the Fourth Proportional to 279,876.84, 386,011.62 and 179,284.20

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Solution

The fourth proportional to 279,876.84, 386,011.62 and 179,284.20 is: 247,272.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,876.84 : 386,011.62 = 179,284.20 : x
  2. Step 2: Convert to fraction form
    279,876.84/386,011.62 = 179,284.20/x
  3. Step 3: Cross multiply
    279,876.84x = 386,011.62 × 179,284.20
  4. Step 4: Simplify right side
    279,876.84x = 69,205,784,482.40
  5. Step 5: Solve for x
    x = 69,205,784,482.40/279,876.84
  6. Step 6: Final answer
    x = 247,272.28

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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.