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Finding the Fourth Proportional to 288,006.60, 432,009.90 and 199,433.10

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Solution

The fourth proportional to 288,006.60, 432,009.90 and 199,433.10 is: 299,149.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,006.60 : 432,009.90 = 199,433.10 : x
  2. Step 2: Convert to fraction form
    288,006.60/432,009.90 = 199,433.10/x
  3. Step 3: Cross multiply
    288,006.60x = 432,009.90 × 199,433.10
  4. Step 4: Simplify right side
    288,006.60x = 86,157,073,587.69
  5. Step 5: Solve for x
    x = 86,157,073,587.69/288,006.60
  6. Step 6: Final answer
    x = 299,149.65

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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.