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Finding the Fourth Proportional to 347,349.20, 520,894.20 and 136,943.60

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Solution

The fourth proportional to 347,349.20, 520,894.20 and 136,943.60 is: 205,364.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,349.20 : 520,894.20 = 136,943.60 : x
  2. Step 2: Convert to fraction form
    347,349.20/520,894.20 = 136,943.60/x
  3. Step 3: Cross multiply
    347,349.20x = 520,894.20 × 136,943.60
  4. Step 4: Simplify right side
    347,349.20x = 71,333,126,967.12
  5. Step 5: Solve for x
    x = 71,333,126,967.12/347,349.20
  6. Step 6: Final answer
    x = 205,364.30

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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.