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Finding the Fourth Proportional to 253,906.80, 380,957.40 and 249,921.60

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Solution

The fourth proportional to 253,906.80, 380,957.40 and 249,921.60 is: 374,978.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,906.80 : 380,957.40 = 249,921.60 : x
  2. Step 2: Convert to fraction form
    253,906.80/380,957.40 = 249,921.60/x
  3. Step 3: Cross multiply
    253,906.80x = 380,957.40 × 249,921.60
  4. Step 4: Simplify right side
    253,906.80x = 95,209,482,939.84
  5. Step 5: Solve for x
    x = 95,209,482,939.84/253,906.80
  6. Step 6: Final answer
    x = 374,978.07

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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.