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Finding the Fourth Proportional to 323,590.91, 485,353.56 and 86,902.84

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Solution

The fourth proportional to 323,590.91, 485,353.56 and 86,902.84 is: 130,345.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,590.91 : 485,353.56 = 86,902.84 : x
  2. Step 2: Convert to fraction form
    323,590.91/485,353.56 = 86,902.84/x
  3. Step 3: Cross multiply
    323,590.91x = 485,353.56 × 86,902.84
  4. Step 4: Simplify right side
    323,590.91x = 42,178,600,341.34
  5. Step 5: Solve for x
    x = 42,178,600,341.34/323,590.91
  6. Step 6: Final answer
    x = 130,345.44

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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.