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Finding the Fourth Proportional to 389,190.64, 537,062.22 and 219,413.82

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Solution

The fourth proportional to 389,190.64, 537,062.22 and 219,413.82 is: 302,779.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,190.64 : 537,062.22 = 219,413.82 : x
  2. Step 2: Convert to fraction form
    389,190.64/537,062.22 = 219,413.82/x
  3. Step 3: Cross multiply
    389,190.64x = 537,062.22 × 219,413.82
  4. Step 4: Simplify right side
    389,190.64x = 117,838,873,267.88
  5. Step 5: Solve for x
    x = 117,838,873,267.88/389,190.64
  6. Step 6: Final answer
    x = 302,779.31

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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.