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Finding the Fourth Proportional to 248,386.64, 372,465.60 and 79,875.80

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Solution

The fourth proportional to 248,386.64, 372,465.60 and 79,875.80 is: 119,776.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,386.64 : 372,465.60 = 79,875.80 : x
  2. Step 2: Convert to fraction form
    248,386.64/372,465.60 = 79,875.80/x
  3. Step 3: Cross multiply
    248,386.64x = 372,465.60 × 79,875.80
  4. Step 4: Simplify right side
    248,386.64x = 29,750,987,772.48
  5. Step 5: Solve for x
    x = 29,750,987,772.48/248,386.64
  6. Step 6: Final answer
    x = 119,776.92

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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.