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Finding the Fourth Proportional to 361,656.52, 542,659.74 and 221,338.60

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Solution

The fourth proportional to 361,656.52, 542,659.74 and 221,338.60 is: 332,114.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,656.52 : 542,659.74 = 221,338.60 : x
  2. Step 2: Convert to fraction form
    361,656.52/542,659.74 = 221,338.60/x
  3. Step 3: Cross multiply
    361,656.52x = 542,659.74 × 221,338.60
  4. Step 4: Simplify right side
    361,656.52x = 120,111,547,127.96
  5. Step 5: Solve for x
    x = 120,111,547,127.96/361,656.52
  6. Step 6: Final answer
    x = 332,114.98

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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.