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Finding the Fourth Proportional to 295,209.80, 442,814.70 and 278,880.20

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Solution

The fourth proportional to 295,209.80, 442,814.70 and 278,880.20 is: 418,320.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,209.80 : 442,814.70 = 278,880.20 : x
  2. Step 2: Convert to fraction form
    295,209.80/442,814.70 = 278,880.20/x
  3. Step 3: Cross multiply
    295,209.80x = 442,814.70 × 278,880.20
  4. Step 4: Simplify right side
    295,209.80x = 123,492,252,098.94
  5. Step 5: Solve for x
    x = 123,492,252,098.94/295,209.80
  6. Step 6: Final answer
    x = 418,320.30

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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.