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Finding the Fourth Proportional to 288,351.68, 397,908.82 and 172,196.24

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Solution

The fourth proportional to 288,351.68, 397,908.82 and 172,196.24 is: 237,620.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,351.68 : 397,908.82 = 172,196.24 : x
  2. Step 2: Convert to fraction form
    288,351.68/397,908.82 = 172,196.24/x
  3. Step 3: Cross multiply
    288,351.68x = 397,908.82 × 172,196.24
  4. Step 4: Simplify right side
    288,351.68x = 68,518,402,666.84
  5. Step 5: Solve for x
    x = 68,518,402,666.84/288,351.68
  6. Step 6: Final answer
    x = 237,620.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.