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Finding the Fourth Proportional to 438,656.80, 657,110.40 and 228,413.20

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Solution

The fourth proportional to 438,656.80, 657,110.40 and 228,413.20 is: 342,164.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,656.80 : 657,110.40 = 228,413.20 : x
  2. Step 2: Convert to fraction form
    438,656.80/657,110.40 = 228,413.20/x
  3. Step 3: Cross multiply
    438,656.80x = 657,110.40 × 228,413.20
  4. Step 4: Simplify right side
    438,656.80x = 150,092,689,217.28
  5. Step 5: Solve for x
    x = 150,092,689,217.28/438,656.80
  6. Step 6: Final answer
    x = 342,164.28

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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.