Home / 278,756,430.48-418,107,400.56-84,669,531.12

Finding the Fourth Proportional to 278,756,430.48, 418,107,400.56 and 84,669,531.12

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Solution

The fourth proportional to 278,756,430.48, 418,107,400.56 and 84,669,531.12 is: 126,996,021.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,756,430.48 : 418,107,400.56 = 84,669,531.12 : x
  2. Step 2: Convert to fraction form
    278,756,430.48/418,107,400.56 = 84,669,531.12/x
  3. Step 3: Cross multiply
    278,756,430.48x = 418,107,400.56 × 84,669,531.12
  4. Step 4: Simplify right side
    278,756,430.48x = 35,400,957,563,217,228
  5. Step 5: Solve for x
    x = 35,400,957,563,217,228/278,756,430.48
  6. Step 6: Final answer
    x = 126,996,021.23

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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.