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Finding the Fourth Proportional to 288,006.40, 432,009.60 and 100,998.40

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Solution

The fourth proportional to 288,006.40, 432,009.60 and 100,998.40 is: 151,497.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,006.40 : 432,009.60 = 100,998.40 : x
  2. Step 2: Convert to fraction form
    288,006.40/432,009.60 = 100,998.40/x
  3. Step 3: Cross multiply
    288,006.40x = 432,009.60 × 100,998.40
  4. Step 4: Simplify right side
    288,006.40x = 43,632,278,384.64
  5. Step 5: Solve for x
    x = 43,632,278,384.64/288,006.40
  6. Step 6: Final answer
    x = 151,497.60

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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.