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Finding the Fourth Proportional to 288,554.48, 398,225.40 and 187,952.48

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Solution

The fourth proportional to 288,554.48, 398,225.40 and 187,952.48 is: 259,387.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,554.48 : 398,225.40 = 187,952.48 : x
  2. Step 2: Convert to fraction form
    288,554.48/398,225.40 = 187,952.48/x
  3. Step 3: Cross multiply
    288,554.48x = 398,225.40 × 187,952.48
  4. Step 4: Simplify right side
    288,554.48x = 74,847,451,528.99
  5. Step 5: Solve for x
    x = 74,847,451,528.99/288,554.48
  6. Step 6: Final answer
    x = 259,387.59

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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.