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Finding the Fourth Proportional to 259,320.30, 388,980.45 and 243,573.90

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Solution

The fourth proportional to 259,320.30, 388,980.45 and 243,573.90 is: 365,360.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,320.30 : 388,980.45 = 243,573.90 : x
  2. Step 2: Convert to fraction form
    259,320.30/388,980.45 = 243,573.90/x
  3. Step 3: Cross multiply
    259,320.30x = 388,980.45 × 243,573.90
  4. Step 4: Simplify right side
    259,320.30x = 94,745,485,230.26
  5. Step 5: Solve for x
    x = 94,745,485,230.26/259,320.30
  6. Step 6: Final answer
    x = 365,360.85

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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.