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Finding the Fourth Proportional to 219,615.40, 329,423.10 and 149,631.40

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Solution

The fourth proportional to 219,615.40, 329,423.10 and 149,631.40 is: 224,447.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,615.40 : 329,423.10 = 149,631.40 : x
  2. Step 2: Convert to fraction form
    219,615.40/329,423.10 = 149,631.40/x
  3. Step 3: Cross multiply
    219,615.40x = 329,423.10 × 149,631.40
  4. Step 4: Simplify right side
    219,615.40x = 49,292,039,645.34
  5. Step 5: Solve for x
    x = 49,292,039,645.34/219,615.40
  6. Step 6: Final answer
    x = 224,447.10

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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.