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Finding the Fourth Proportional to 192,639.90, 288,990.72 and 59,488.86

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Solution

The fourth proportional to 192,639.90, 288,990.72 and 59,488.86 is: 89,242.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,639.90 : 288,990.72 = 59,488.86 : x
  2. Step 2: Convert to fraction form
    192,639.90/288,990.72 = 59,488.86/x
  3. Step 3: Cross multiply
    192,639.90x = 288,990.72 × 59,488.86
  4. Step 4: Simplify right side
    192,639.90x = 17,191,728,483.38
  5. Step 5: Solve for x
    x = 17,191,728,483.38/192,639.90
  6. Step 6: Final answer
    x = 89,242.82

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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.