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Finding the Fourth Proportional to 419,957.01, 629,937.90 and 104,413.95

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Solution

The fourth proportional to 419,957.01, 629,937.90 and 104,413.95 is: 156,621.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,957.01 : 629,937.90 = 104,413.95 : x
  2. Step 2: Convert to fraction form
    419,957.01/629,937.90 = 104,413.95/x
  3. Step 3: Cross multiply
    419,957.01x = 629,937.90 × 104,413.95
  4. Step 4: Simplify right side
    419,957.01x = 65,774,304,393.71
  5. Step 5: Solve for x
    x = 65,774,304,393.71/419,957.01
  6. Step 6: Final answer
    x = 156,621.52

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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.