Home / 278,731.80-417,970.08-89,155.44

Finding the Fourth Proportional to 278,731.80, 417,970.08 and 89,155.44

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Solution

The fourth proportional to 278,731.80, 417,970.08 and 89,155.44 is: 133,692.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,731.80 : 417,970.08 = 89,155.44 : x
  2. Step 2: Convert to fraction form
    278,731.80/417,970.08 = 89,155.44/x
  3. Step 3: Cross multiply
    278,731.80x = 417,970.08 × 89,155.44
  4. Step 4: Simplify right side
    278,731.80x = 37,264,306,389.24
  5. Step 5: Solve for x
    x = 37,264,306,389.24/278,731.80
  6. Step 6: Final answer
    x = 133,692.34

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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.