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Finding the Fourth Proportional to 518,388.75, 715,413.20 and 292,034.25

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Solution

The fourth proportional to 518,388.75, 715,413.20 and 292,034.25 is: 403,027.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,388.75 : 715,413.20 = 292,034.25 : x
  2. Step 2: Convert to fraction form
    518,388.75/715,413.20 = 292,034.25/x
  3. Step 3: Cross multiply
    518,388.75x = 715,413.20 × 292,034.25
  4. Step 4: Simplify right side
    518,388.75x = 208,925,155,841.93
  5. Step 5: Solve for x
    x = 208,925,155,841.93/518,388.75
  6. Step 6: Final answer
    x = 403,027.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.