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Finding the Fourth Proportional to 205,006.60, 307,509.90 and 125,864.20

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Solution

The fourth proportional to 205,006.60, 307,509.90 and 125,864.20 is: 188,796.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,006.60 : 307,509.90 = 125,864.20 : x
  2. Step 2: Convert to fraction form
    205,006.60/307,509.90 = 125,864.20/x
  3. Step 3: Cross multiply
    205,006.60x = 307,509.90 × 125,864.20
  4. Step 4: Simplify right side
    205,006.60x = 38,704,487,555.58
  5. Step 5: Solve for x
    x = 38,704,487,555.58/205,006.60
  6. Step 6: Final answer
    x = 188,796.30

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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.