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Finding the Fourth Proportional to 417,208.20, 626,006.70 and 312,232.20

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Solution

The fourth proportional to 417,208.20, 626,006.70 and 312,232.20 is: 468,493.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,208.20 : 626,006.70 = 312,232.20 : x
  2. Step 2: Convert to fraction form
    417,208.20/626,006.70 = 312,232.20/x
  3. Step 3: Cross multiply
    417,208.20x = 626,006.70 × 312,232.20
  4. Step 4: Simplify right side
    417,208.20x = 195,459,449,155.74
  5. Step 5: Solve for x
    x = 195,459,449,155.74/417,208.20
  6. Step 6: Final answer
    x = 468,493.79

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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.