Home / 278,568.10-417,803.55-100,983.70

Finding the Fourth Proportional to 278,568.10, 417,803.55 and 100,983.70

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Solution

The fourth proportional to 278,568.10, 417,803.55 and 100,983.70 is: 151,457.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,568.10 : 417,803.55 = 100,983.70 : x
  2. Step 2: Convert to fraction form
    278,568.10/417,803.55 = 100,983.70/x
  3. Step 3: Cross multiply
    278,568.10x = 417,803.55 × 100,983.70
  4. Step 4: Simplify right side
    278,568.10x = 42,191,348,352.14
  5. Step 5: Solve for x
    x = 42,191,348,352.14/278,568.10
  6. Step 6: Final answer
    x = 151,457.93

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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.