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Finding the Fourth Proportional to 313,398.92, 432,846.60 and 211,248.20

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Solution

The fourth proportional to 313,398.92, 432,846.60 and 211,248.20 is: 291,762.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,398.92 : 432,846.60 = 211,248.20 : x
  2. Step 2: Convert to fraction form
    313,398.92/432,846.60 = 211,248.20/x
  3. Step 3: Cross multiply
    313,398.92x = 432,846.60 × 211,248.20
  4. Step 4: Simplify right side
    313,398.92x = 91,438,065,126.12
  5. Step 5: Solve for x
    x = 91,438,065,126.12/313,398.92
  6. Step 6: Final answer
    x = 291,762.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.