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Finding the Fourth Proportional to 199,483.80, 298,967.16 and 81,017.52

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Solution

The fourth proportional to 199,483.80, 298,967.16 and 81,017.52 is: 121,421.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,483.80 : 298,967.16 = 81,017.52 : x
  2. Step 2: Convert to fraction form
    199,483.80/298,967.16 = 81,017.52/x
  3. Step 3: Cross multiply
    199,483.80x = 298,967.16 × 81,017.52
  4. Step 4: Simplify right side
    199,483.80x = 24,221,577,864.64
  5. Step 5: Solve for x
    x = 24,221,577,864.64/199,483.80
  6. Step 6: Final answer
    x = 121,421.28

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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.