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Finding the Fourth Proportional to 407,329.60, 610,994.34 and 126,868.72

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Solution

The fourth proportional to 407,329.60, 610,994.34 and 126,868.72 is: 190,303.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,329.60 : 610,994.34 = 126,868.72 : x
  2. Step 2: Convert to fraction form
    407,329.60/610,994.34 = 126,868.72/x
  3. Step 3: Cross multiply
    407,329.60x = 610,994.34 × 126,868.72
  4. Step 4: Simplify right side
    407,329.60x = 77,516,069,843.04
  5. Step 5: Solve for x
    x = 77,516,069,843.04/407,329.60
  6. Step 6: Final answer
    x = 190,303.06

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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.