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Finding the Fourth Proportional to 365,988.34, 549,026.79 and 129,282.58

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Solution

The fourth proportional to 365,988.34, 549,026.79 and 129,282.58 is: 193,939.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,988.34 : 549,026.79 = 129,282.58 : x
  2. Step 2: Convert to fraction form
    365,988.34/549,026.79 = 129,282.58/x
  3. Step 3: Cross multiply
    365,988.34x = 549,026.79 × 129,282.58
  4. Step 4: Simplify right side
    365,988.34x = 70,979,599,900.32
  5. Step 5: Solve for x
    x = 70,979,599,900.32/365,988.34
  6. Step 6: Final answer
    x = 193,939.51

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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.