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Finding the Fourth Proportional to 259,294.80, 388,942.20 and 243,548.40

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Solution

The fourth proportional to 259,294.80, 388,942.20 and 243,548.40 is: 365,322.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,294.80 : 388,942.20 = 243,548.40 : x
  2. Step 2: Convert to fraction form
    259,294.80/388,942.20 = 243,548.40/x
  3. Step 3: Cross multiply
    259,294.80x = 388,942.20 × 243,548.40
  4. Step 4: Simplify right side
    259,294.80x = 94,726,250,502.48
  5. Step 5: Solve for x
    x = 94,726,250,502.48/259,294.80
  6. Step 6: Final answer
    x = 365,322.60

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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.