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Finding the Fourth Proportional to 327,178.84, 490,569.98 and 213,411.64

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Solution

The fourth proportional to 327,178.84, 490,569.98 and 213,411.64 is: 319,988.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,178.84 : 490,569.98 = 213,411.64 : x
  2. Step 2: Convert to fraction form
    327,178.84/490,569.98 = 213,411.64/x
  3. Step 3: Cross multiply
    327,178.84x = 490,569.98 × 213,411.64
  4. Step 4: Simplify right side
    327,178.84x = 104,693,343,966.57
  5. Step 5: Solve for x
    x = 104,693,343,966.57/327,178.84
  6. Step 6: Final answer
    x = 319,988.13

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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.