Home / 278,699.10-418,024.35-91,710.60

Finding the Fourth Proportional to 278,699.10, 418,024.35 and 91,710.60

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Solution

The fourth proportional to 278,699.10, 418,024.35 and 91,710.60 is: 137,557.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,699.10 : 418,024.35 = 91,710.60 : x
  2. Step 2: Convert to fraction form
    278,699.10/418,024.35 = 91,710.60/x
  3. Step 3: Cross multiply
    278,699.10x = 418,024.35 × 91,710.60
  4. Step 4: Simplify right side
    278,699.10x = 38,337,263,953.11
  5. Step 5: Solve for x
    x = 38,337,263,953.11/278,699.10
  6. Step 6: Final answer
    x = 137,557.90

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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.