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Finding the Fourth Proportional to 479,264.60, 661,381.45 and 264,413.72

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Solution

The fourth proportional to 479,264.60, 661,381.45 and 264,413.72 is: 364,888.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,264.60 : 661,381.45 = 264,413.72 : x
  2. Step 2: Convert to fraction form
    479,264.60/661,381.45 = 264,413.72/x
  3. Step 3: Cross multiply
    479,264.60x = 661,381.45 × 264,413.72
  4. Step 4: Simplify right side
    479,264.60x = 174,878,325,565.55
  5. Step 5: Solve for x
    x = 174,878,325,565.55/479,264.60
  6. Step 6: Final answer
    x = 364,888.89

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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.