Home / 908,138.10-1,361,235.15-308,543.70

Finding the Fourth Proportional to 908,138.10, 1,361,235.15 and 308,543.70

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Solution

The fourth proportional to 908,138.10, 1,361,235.15 and 308,543.70 is: 462,485.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,138.10 : 1,361,235.15 = 308,543.70 : x
  2. Step 2: Convert to fraction form
    908,138.10/1,361,235.15 = 308,543.70/x
  3. Step 3: Cross multiply
    908,138.10x = 1,361,235.15 × 308,543.70
  4. Step 4: Simplify right side
    908,138.10x = 420,000,529,751.06
  5. Step 5: Solve for x
    x = 420,000,529,751.06/908,138.10
  6. Step 6: Final answer
    x = 462,485.31

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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.