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Finding the Fourth Proportional to 326,869.40, 490,304.10 and 149,722.40

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Solution

The fourth proportional to 326,869.40, 490,304.10 and 149,722.40 is: 224,583.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,869.40 : 490,304.10 = 149,722.40 : x
  2. Step 2: Convert to fraction form
    326,869.40/490,304.10 = 149,722.40/x
  3. Step 3: Cross multiply
    326,869.40x = 490,304.10 × 149,722.40
  4. Step 4: Simplify right side
    326,869.40x = 73,409,506,581.84
  5. Step 5: Solve for x
    x = 73,409,506,581.84/326,869.40
  6. Step 6: Final answer
    x = 224,583.60

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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.