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Finding the Fourth Proportional to 295,019.20, 442,528.80 and 261,776.80

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Solution

The fourth proportional to 295,019.20, 442,528.80 and 261,776.80 is: 392,665.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,019.20 : 442,528.80 = 261,776.80 : x
  2. Step 2: Convert to fraction form
    295,019.20/442,528.80 = 261,776.80/x
  3. Step 3: Cross multiply
    295,019.20x = 442,528.80 × 261,776.80
  4. Step 4: Simplify right side
    295,019.20x = 115,843,773,171.84
  5. Step 5: Solve for x
    x = 115,843,773,171.84/295,019.20
  6. Step 6: Final answer
    x = 392,665.20

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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.