Home / 278,583.40-417,875.10-200,434.60

Finding the Fourth Proportional to 278,583.40, 417,875.10 and 200,434.60

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Solution

The fourth proportional to 278,583.40, 417,875.10 and 200,434.60 is: 300,651.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,583.40 : 417,875.10 = 200,434.60 : x
  2. Step 2: Convert to fraction form
    278,583.40/417,875.10 = 200,434.60/x
  3. Step 3: Cross multiply
    278,583.40x = 417,875.10 × 200,434.60
  4. Step 4: Simplify right side
    278,583.40x = 83,756,628,518.46
  5. Step 5: Solve for x
    x = 83,756,628,518.46/278,583.40
  6. Step 6: Final answer
    x = 300,651.90

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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.