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Finding the Fourth Proportional to 349,728.60, 523,383.30 and 209,587.80

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Solution

The fourth proportional to 349,728.60, 523,383.30 and 209,587.80 is: 313,656.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,728.60 : 523,383.30 = 209,587.80 : x
  2. Step 2: Convert to fraction form
    349,728.60/523,383.30 = 209,587.80/x
  3. Step 3: Cross multiply
    349,728.60x = 523,383.30 × 209,587.80
  4. Step 4: Simplify right side
    349,728.60x = 109,694,754,403.74
  5. Step 5: Solve for x
    x = 109,694,754,403.74/349,728.60
  6. Step 6: Final answer
    x = 313,656.80

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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.