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Finding the Fourth Proportional to 395,739.19, 592,189.81 and 342,613.89

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Solution

The fourth proportional to 395,739.19, 592,189.81 and 342,613.89 is: 512,692.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,739.19 : 592,189.81 = 342,613.89 : x
  2. Step 2: Convert to fraction form
    395,739.19/592,189.81 = 342,613.89/x
  3. Step 3: Cross multiply
    395,739.19x = 592,189.81 × 342,613.89
  4. Step 4: Simplify right side
    395,739.19x = 202,892,454,422.46
  5. Step 5: Solve for x
    x = 202,892,454,422.46/395,739.19
  6. Step 6: Final answer
    x = 512,692.35

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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.