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Finding the Fourth Proportional to 259,344.86, 388,499.70 and 125,820.01

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Solution

The fourth proportional to 259,344.86, 388,499.70 and 125,820.01 is: 188,478.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,344.86 : 388,499.70 = 125,820.01 : x
  2. Step 2: Convert to fraction form
    259,344.86/388,499.70 = 125,820.01/x
  3. Step 3: Cross multiply
    259,344.86x = 388,499.70 × 125,820.01
  4. Step 4: Simplify right side
    259,344.86x = 48,881,035,482.30
  5. Step 5: Solve for x
    x = 48,881,035,482.30/259,344.86
  6. Step 6: Final answer
    x = 188,478.90

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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.