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Finding the Fourth Proportional to 640,288.80, 959,765.76 and 240,654.24

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Solution

The fourth proportional to 640,288.80, 959,765.76 and 240,654.24 is: 360,730.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,288.80 : 959,765.76 = 240,654.24 : x
  2. Step 2: Convert to fraction form
    640,288.80/959,765.76 = 240,654.24/x
  3. Step 3: Cross multiply
    640,288.80x = 959,765.76 × 240,654.24
  4. Step 4: Simplify right side
    640,288.80x = 230,971,699,550.82
  5. Step 5: Solve for x
    x = 230,971,699,550.82/640,288.80
  6. Step 6: Final answer
    x = 360,730.50

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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.