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Finding the Fourth Proportional to 216,649.85, 298,967.81 and 118,532.61

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Solution

The fourth proportional to 216,649.85, 298,967.81 and 118,532.61 is: 163,570.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,649.85 : 298,967.81 = 118,532.61 : x
  2. Step 2: Convert to fraction form
    216,649.85/298,967.81 = 118,532.61/x
  3. Step 3: Cross multiply
    216,649.85x = 298,967.81 × 118,532.61
  4. Step 4: Simplify right side
    216,649.85x = 35,437,432,885.95
  5. Step 5: Solve for x
    x = 35,437,432,885.95/216,649.85
  6. Step 6: Final answer
    x = 163,570.08

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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.