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Finding the Fourth Proportional to 660,838.32, 991,295.20 and 187,486.48

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Solution

The fourth proportional to 660,838.32, 991,295.20 and 187,486.48 is: 281,240.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,838.32 : 991,295.20 = 187,486.48 : x
  2. Step 2: Convert to fraction form
    660,838.32/991,295.20 = 187,486.48/x
  3. Step 3: Cross multiply
    660,838.32x = 991,295.20 × 187,486.48
  4. Step 4: Simplify right side
    660,838.32x = 185,854,447,688.90
  5. Step 5: Solve for x
    x = 185,854,447,688.90/660,838.32
  6. Step 6: Final answer
    x = 281,240.42

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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.