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Finding the Fourth Proportional to 259,975.80, 389,963.70 and 148,001.40

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Solution

The fourth proportional to 259,975.80, 389,963.70 and 148,001.40 is: 222,002.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,975.80 : 389,963.70 = 148,001.40 : x
  2. Step 2: Convert to fraction form
    259,975.80/389,963.70 = 148,001.40/x
  3. Step 3: Cross multiply
    259,975.80x = 389,963.70 × 148,001.40
  4. Step 4: Simplify right side
    259,975.80x = 57,715,173,549.18
  5. Step 5: Solve for x
    x = 57,715,173,549.18/259,975.80
  6. Step 6: Final answer
    x = 222,002.10

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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.