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Finding the Fourth Proportional to 248,211.60, 372,336.12 and 77,411.76

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Solution

The fourth proportional to 248,211.60, 372,336.12 and 77,411.76 is: 116,123.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,211.60 : 372,336.12 = 77,411.76 : x
  2. Step 2: Convert to fraction form
    248,211.60/372,336.12 = 77,411.76/x
  3. Step 3: Cross multiply
    248,211.60x = 372,336.12 × 77,411.76
  4. Step 4: Simplify right side
    248,211.60x = 28,823,194,360.77
  5. Step 5: Solve for x
    x = 28,823,194,360.77/248,211.60
  6. Step 6: Final answer
    x = 116,123.48

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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.