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Finding the Fourth Proportional to 306,746.70, 423,200.90 and 177,614.70

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Solution

The fourth proportional to 306,746.70, 423,200.90 and 177,614.70 is: 245,044.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,746.70 : 423,200.90 = 177,614.70 : x
  2. Step 2: Convert to fraction form
    306,746.70/423,200.90 = 177,614.70/x
  3. Step 3: Cross multiply
    306,746.70x = 423,200.90 × 177,614.70
  4. Step 4: Simplify right side
    306,746.70x = 75,166,700,893.23
  5. Step 5: Solve for x
    x = 75,166,700,893.23/306,746.70
  6. Step 6: Final answer
    x = 245,044.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.