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Finding the Fourth Proportional to 407,342.61, 611,120.39 and 236,400.00

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Solution

The fourth proportional to 407,342.61, 611,120.39 and 236,400.00 is: 354,661.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,342.61 : 611,120.39 = 236,400.00 : x
  2. Step 2: Convert to fraction form
    407,342.61/611,120.39 = 236,400.00/x
  3. Step 3: Cross multiply
    407,342.61x = 611,120.39 × 236,400.00
  4. Step 4: Simplify right side
    407,342.61x = 144,468,859,641.15
  5. Step 5: Solve for x
    x = 144,468,859,641.15/407,342.61
  6. Step 6: Final answer
    x = 354,661.79

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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.