Home / 278,498,781.49-417,762,048.14-105,988,965.07

Finding the Fourth Proportional to 278,498,781.49, 417,762,048.14 and 105,988,965.07

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Solution

The fourth proportional to 278,498,781.49, 417,762,048.14 and 105,988,965.07 is: 158,988,728.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,498,781.49 : 417,762,048.14 = 105,988,965.07 : x
  2. Step 2: Convert to fraction form
    278,498,781.49/417,762,048.14 = 105,988,965.07/x
  3. Step 3: Cross multiply
    278,498,781.49x = 417,762,048.14 × 105,988,965.07
  4. Step 4: Simplify right side
    278,498,781.49x = 44,278,167,127,882,112
  5. Step 5: Solve for x
    x = 44,278,167,127,882,112/278,498,781.49
  6. Step 6: Final answer
    x = 158,988,728.39

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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.