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Finding the Fourth Proportional to 295,209.80, 442,814.70 and 145,473.20

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Solution

The fourth proportional to 295,209.80, 442,814.70 and 145,473.20 is: 218,209.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,209.80 : 442,814.70 = 145,473.20 : x
  2. Step 2: Convert to fraction form
    295,209.80/442,814.70 = 145,473.20/x
  3. Step 3: Cross multiply
    295,209.80x = 442,814.70 × 145,473.20
  4. Step 4: Simplify right side
    295,209.80x = 64,417,671,416.04
  5. Step 5: Solve for x
    x = 64,417,671,416.04/295,209.80
  6. Step 6: Final answer
    x = 218,209.80

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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.