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Finding the Fourth Proportional to 395,738.19, 592,188.32 and 342,612.89

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Solution

The fourth proportional to 395,738.19, 592,188.32 and 342,612.89 is: 512,690.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,738.19 : 592,188.32 = 342,612.89 : x
  2. Step 2: Convert to fraction form
    395,738.19/592,188.32 = 342,612.89/x
  3. Step 3: Cross multiply
    395,738.19x = 592,188.32 × 342,612.89
  4. Step 4: Simplify right side
    395,738.19x = 202,891,347,065.44
  5. Step 5: Solve for x
    x = 202,891,347,065.44/395,738.19
  6. Step 6: Final answer
    x = 512,690.85

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1.5x scale

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.