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Finding the Fourth Proportional to 219,432.40, 329,148.60 and 207,768.40

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Solution

The fourth proportional to 219,432.40, 329,148.60 and 207,768.40 is: 311,652.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,432.40 : 329,148.60 = 207,768.40 : x
  2. Step 2: Convert to fraction form
    219,432.40/329,148.60 = 207,768.40/x
  3. Step 3: Cross multiply
    219,432.40x = 329,148.60 × 207,768.40
  4. Step 4: Simplify right side
    219,432.40x = 68,386,677,984.24
  5. Step 5: Solve for x
    x = 68,386,677,984.24/219,432.40
  6. Step 6: Final answer
    x = 311,652.60

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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.