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Finding the Fourth Proportional to 357,702.80, 536,220.65 and 120,879.86

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Solution

The fourth proportional to 357,702.80, 536,220.65 and 120,879.86 is: 181,207.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,702.80 : 536,220.65 = 120,879.86 : x
  2. Step 2: Convert to fraction form
    357,702.80/536,220.65 = 120,879.86/x
  3. Step 3: Cross multiply
    357,702.80x = 536,220.65 × 120,879.86
  4. Step 4: Simplify right side
    357,702.80x = 64,818,273,815.61
  5. Step 5: Solve for x
    x = 64,818,273,815.61/357,702.80
  6. Step 6: Final answer
    x = 181,207.07

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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.