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Finding the Fourth Proportional to 295,310.80, 442,663.80 and 145,320.40

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Solution

The fourth proportional to 295,310.80, 442,663.80 and 145,320.40 is: 217,831.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,310.80 : 442,663.80 = 145,320.40 : x
  2. Step 2: Convert to fraction form
    295,310.80/442,663.80 = 145,320.40/x
  3. Step 3: Cross multiply
    295,310.80x = 442,663.80 × 145,320.40
  4. Step 4: Simplify right side
    295,310.80x = 64,328,080,481.52
  5. Step 5: Solve for x
    x = 64,328,080,481.52/295,310.80
  6. Step 6: Final answer
    x = 217,831.79

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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.