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Finding the Fourth Proportional to 259,300.80, 388,951.20 and 243,554.40

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Solution

The fourth proportional to 259,300.80, 388,951.20 and 243,554.40 is: 365,331.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,300.80 : 388,951.20 = 243,554.40 : x
  2. Step 2: Convert to fraction form
    259,300.80/388,951.20 = 243,554.40/x
  3. Step 3: Cross multiply
    259,300.80x = 388,951.20 × 243,554.40
  4. Step 4: Simplify right side
    259,300.80x = 94,730,776,145.28
  5. Step 5: Solve for x
    x = 94,730,776,145.28/259,300.80
  6. Step 6: Final answer
    x = 365,331.60

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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.