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Finding the Fourth Proportional to 248,406.30, 372,423.96 and 79,830.45

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Solution

The fourth proportional to 248,406.30, 372,423.96 and 79,830.45 is: 119,686.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,406.30 : 372,423.96 = 79,830.45 : x
  2. Step 2: Convert to fraction form
    248,406.30/372,423.96 = 79,830.45/x
  3. Step 3: Cross multiply
    248,406.30x = 372,423.96 × 79,830.45
  4. Step 4: Simplify right side
    248,406.30x = 29,730,772,317.58
  5. Step 5: Solve for x
    x = 29,730,772,317.58/248,406.30
  6. Step 6: Final answer
    x = 119,686.06

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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.