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Finding the Fourth Proportional to 347,305.80, 520,630.65 and 205,260.15

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Solution

The fourth proportional to 347,305.80, 520,630.65 and 205,260.15 is: 307,696.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,305.80 : 520,630.65 = 205,260.15 : x
  2. Step 2: Convert to fraction form
    347,305.80/520,630.65 = 205,260.15/x
  3. Step 3: Cross multiply
    347,305.80x = 520,630.65 × 205,260.15
  4. Step 4: Simplify right side
    347,305.80x = 106,864,725,313.60
  5. Step 5: Solve for x
    x = 106,864,725,313.60/347,305.80
  6. Step 6: Final answer
    x = 307,696.35

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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.