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Finding the Fourth Proportional to 436,853.45, 655,373.66 and 247,403.36

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Solution

The fourth proportional to 436,853.45, 655,373.66 and 247,403.36 is: 371,157.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,853.45 : 655,373.66 = 247,403.36 : x
  2. Step 2: Convert to fraction form
    436,853.45/655,373.66 = 247,403.36/x
  3. Step 3: Cross multiply
    436,853.45x = 655,373.66 × 247,403.36
  4. Step 4: Simplify right side
    436,853.45x = 162,141,641,025.61
  5. Step 5: Solve for x
    x = 162,141,641,025.61/436,853.45
  6. Step 6: Final answer
    x = 371,157.98

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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.