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Finding the Fourth Proportional to 540,115.80, 745,374.84 and 298,413.96

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Solution

The fourth proportional to 540,115.80, 745,374.84 and 298,413.96 is: 411,819.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,115.80 : 745,374.84 = 298,413.96 : x
  2. Step 2: Convert to fraction form
    540,115.80/745,374.84 = 298,413.96/x
  3. Step 3: Cross multiply
    540,115.80x = 745,374.84 × 298,413.96
  4. Step 4: Simplify right side
    540,115.80x = 222,430,257,688.77
  5. Step 5: Solve for x
    x = 222,430,257,688.77/540,115.80
  6. Step 6: Final answer
    x = 411,819.57

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1.5x scale

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.