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Finding the Fourth Proportional to 440,221.60, 660,332.40 and 288,006.40

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Solution

The fourth proportional to 440,221.60, 660,332.40 and 288,006.40 is: 432,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,221.60 : 660,332.40 = 288,006.40 : x
  2. Step 2: Convert to fraction form
    440,221.60/660,332.40 = 288,006.40/x
  3. Step 3: Cross multiply
    440,221.60x = 660,332.40 × 288,006.40
  4. Step 4: Simplify right side
    440,221.60x = 190,179,957,327.36
  5. Step 5: Solve for x
    x = 190,179,957,327.36/440,221.60
  6. Step 6: Final answer
    x = 432,009.60

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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.