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Finding the Fourth Proportional to 303,348.90, 455,132.70 and 292,413.90

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Solution

The fourth proportional to 303,348.90, 455,132.70 and 292,413.90 is: 438,726.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,348.90 : 455,132.70 = 292,413.90 : x
  2. Step 2: Convert to fraction form
    303,348.90/455,132.70 = 292,413.90/x
  3. Step 3: Cross multiply
    303,348.90x = 455,132.70 × 292,413.90
  4. Step 4: Simplify right side
    303,348.90x = 133,087,127,824.53
  5. Step 5: Solve for x
    x = 133,087,127,824.53/303,348.90
  6. Step 6: Final answer
    x = 438,726.26

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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.