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Finding the Fourth Proportional to 143,394, 215,091 and 60,288

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Solution

The fourth proportional to 143,394, 215,091 and 60,288 is: 90,432

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,394 : 215,091 = 60,288 : x
  2. Step 2: Convert to fraction form
    143,394/215,091 = 60,288/x
  3. Step 3: Cross multiply
    143,394x = 215,091 × 60,288
  4. Step 4: Simplify right side
    143,394x = 12,967,406,208
  5. Step 5: Solve for x
    x = 12,967,406,208/143,394
  6. Step 6: Final answer
    x = 90,432

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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.