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Finding the Fourth Proportional to 408,130.20, 610,985.70 and 303,413.40

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Solution

The fourth proportional to 408,130.20, 610,985.70 and 303,413.40 is: 454,220.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,130.20 : 610,985.70 = 303,413.40 : x
  2. Step 2: Convert to fraction form
    408,130.20/610,985.70 = 303,413.40/x
  3. Step 3: Cross multiply
    408,130.20x = 610,985.70 × 303,413.40
  4. Step 4: Simplify right side
    408,130.20x = 185,381,248,588.38
  5. Step 5: Solve for x
    x = 185,381,248,588.38/408,130.20
  6. Step 6: Final answer
    x = 454,220.86

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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.