Home / 278,325.73-417,710-100,883.35

Finding the Fourth Proportional to 278,325.73, 417,710 and 100,883.35

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Solution

The fourth proportional to 278,325.73, 417,710 and 100,883.35 is: 151,405.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,325.73 : 417,710 = 100,883.35 : x
  2. Step 2: Convert to fraction form
    278,325.73/417,710 = 100,883.35/x
  3. Step 3: Cross multiply
    278,325.73x = 417,710 × 100,883.35
  4. Step 4: Simplify right side
    278,325.73x = 42,139,984,128.50
  5. Step 5: Solve for x
    x = 42,139,984,128.50/278,325.73
  6. Step 6: Final answer
    x = 151,405.28

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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.