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Finding the Fourth Proportional to 346,963.80, 520,445.70 and 206,995.80

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Solution

The fourth proportional to 346,963.80, 520,445.70 and 206,995.80 is: 310,493.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,963.80 : 520,445.70 = 206,995.80 : x
  2. Step 2: Convert to fraction form
    346,963.80/520,445.70 = 206,995.80/x
  3. Step 3: Cross multiply
    346,963.80x = 520,445.70 × 206,995.80
  4. Step 4: Simplify right side
    346,963.80x = 107,730,074,028.06
  5. Step 5: Solve for x
    x = 107,730,074,028.06/346,963.80
  6. Step 6: Final answer
    x = 310,493.70

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Similar ratio
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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.