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Finding the Fourth Proportional to 288,007.20, 432,205.20 and 161,647.20

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Solution

The fourth proportional to 288,007.20, 432,205.20 and 161,647.20 is: 242,579.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,007.20 : 432,205.20 = 161,647.20 : x
  2. Step 2: Convert to fraction form
    288,007.20/432,205.20 = 161,647.20/x
  3. Step 3: Cross multiply
    288,007.20x = 432,205.20 × 161,647.20
  4. Step 4: Simplify right side
    288,007.20x = 69,864,760,405.44
  5. Step 5: Solve for x
    x = 69,864,760,405.44/288,007.20
  6. Step 6: Final answer
    x = 242,579.91

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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.