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Finding the Fourth Proportional to 310,810.39, 466,215.70 and 139,832.43

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Solution

The fourth proportional to 310,810.39, 466,215.70 and 139,832.43 is: 209,748.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,810.39 : 466,215.70 = 139,832.43 : x
  2. Step 2: Convert to fraction form
    310,810.39/466,215.70 = 139,832.43/x
  3. Step 3: Cross multiply
    310,810.39x = 466,215.70 × 139,832.43
  4. Step 4: Simplify right side
    310,810.39x = 65,192,071,961.56
  5. Step 5: Solve for x
    x = 65,192,071,961.56/310,810.39
  6. Step 6: Final answer
    x = 209,748.69

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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.