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Finding the Fourth Proportional to 540,023.40, 808,868.70 and 290,413.80

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Solution

The fourth proportional to 540,023.40, 808,868.70 and 290,413.80 is: 434,993.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,023.40 : 808,868.70 = 290,413.80 : x
  2. Step 2: Convert to fraction form
    540,023.40/808,868.70 = 290,413.80/x
  3. Step 3: Cross multiply
    540,023.40x = 808,868.70 × 290,413.80
  4. Step 4: Simplify right side
    540,023.40x = 234,906,632,868.06
  5. Step 5: Solve for x
    x = 234,906,632,868.06/540,023.40
  6. Step 6: Final answer
    x = 434,993.43

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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.