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Finding the Fourth Proportional to 417,998.70, 626,994.72 and 248,395.83

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Solution

The fourth proportional to 417,998.70, 626,994.72 and 248,395.83 is: 372,591.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,998.70 : 626,994.72 = 248,395.83 : x
  2. Step 2: Convert to fraction form
    417,998.70/626,994.72 = 248,395.83/x
  3. Step 3: Cross multiply
    417,998.70x = 626,994.72 × 248,395.83
  4. Step 4: Simplify right side
    417,998.70x = 155,742,874,603.17
  5. Step 5: Solve for x
    x = 155,742,874,603.17/417,998.70
  6. Step 6: Final answer
    x = 372,591.76

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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.