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Finding the Fourth Proportional to 540,446.67, 745,740.18 and 307,879.73

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Solution

The fourth proportional to 540,446.67, 745,740.18 and 307,879.73 is: 424,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,446.67 : 745,740.18 = 307,879.73 : x
  2. Step 2: Convert to fraction form
    540,446.67/745,740.18 = 307,879.73/x
  3. Step 3: Cross multiply
    540,446.67x = 745,740.18 × 307,879.73
  4. Step 4: Simplify right side
    540,446.67x = 229,598,285,268.55
  5. Step 5: Solve for x
    x = 229,598,285,268.55/540,446.67
  6. Step 6: Final answer
    x = 424,830.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.