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Finding the Fourth Proportional to 240,139.74, 360,209.61 and 90,413.62

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Solution

The fourth proportional to 240,139.74, 360,209.61 and 90,413.62 is: 135,620.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,139.74 : 360,209.61 = 90,413.62 : x
  2. Step 2: Convert to fraction form
    240,139.74/360,209.61 = 90,413.62/x
  3. Step 3: Cross multiply
    240,139.74x = 360,209.61 × 90,413.62
  4. Step 4: Simplify right side
    240,139.74x = 32,567,854,798.89
  5. Step 5: Solve for x
    x = 32,567,854,798.89/240,139.74
  6. Step 6: Final answer
    x = 135,620.43

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1.5x scale

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.