Home / 352,428.32-485,983.45-209,160.68

Finding the Fourth Proportional to 352,428.32, 485,983.45 and 209,160.68

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Solution

The fourth proportional to 352,428.32, 485,983.45 and 209,160.68 is: 288,423.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,428.32 : 485,983.45 = 209,160.68 : x
  2. Step 2: Convert to fraction form
    352,428.32/485,983.45 = 209,160.68/x
  3. Step 3: Cross multiply
    352,428.32x = 485,983.45 × 209,160.68
  4. Step 4: Simplify right side
    352,428.32x = 101,648,630,608.61
  5. Step 5: Solve for x
    x = 101,648,630,608.61/352,428.32
  6. Step 6: Final answer
    x = 288,423.56

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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.