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Finding the Fourth Proportional to 288,817.38, 398,689.29 and 175,679.46

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Solution

The fourth proportional to 288,817.38, 398,689.29 and 175,679.46 is: 242,511.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,817.38 : 398,689.29 = 175,679.46 : x
  2. Step 2: Convert to fraction form
    288,817.38/398,689.29 = 175,679.46/x
  3. Step 3: Cross multiply
    288,817.38x = 398,689.29 × 175,679.46
  4. Step 4: Simplify right side
    288,817.38x = 70,041,519,174.98
  5. Step 5: Solve for x
    x = 70,041,519,174.98/288,817.38
  6. Step 6: Final answer
    x = 242,511.44

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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.