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Finding the Fourth Proportional to 249,612.80, 374,420.80 and 99,865.60

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Solution

The fourth proportional to 249,612.80, 374,420.80 and 99,865.60 is: 149,799.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,612.80 : 374,420.80 = 99,865.60 : x
  2. Step 2: Convert to fraction form
    249,612.80/374,420.80 = 99,865.60/x
  3. Step 3: Cross multiply
    249,612.80x = 374,420.80 × 99,865.60
  4. Step 4: Simplify right side
    249,612.80x = 37,391,757,844.48
  5. Step 5: Solve for x
    x = 37,391,757,844.48/249,612.80
  6. Step 6: Final answer
    x = 149,799.04

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1.5x scale

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.