Home / 278,502,910.80-417,754,366.20-74,030,986.05

Finding the Fourth Proportional to 278,502,910.80, 417,754,366.20 and 74,030,986.05

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Solution

The fourth proportional to 278,502,910.80, 417,754,366.20 and 74,030,986.05 is: 111,046,479.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,502,910.80 : 417,754,366.20 = 74,030,986.05 : x
  2. Step 2: Convert to fraction form
    278,502,910.80/417,754,366.20 = 74,030,986.05/x
  3. Step 3: Cross multiply
    278,502,910.80x = 417,754,366.20 × 74,030,986.05
  4. Step 4: Simplify right side
    278,502,910.80x = 30,926,767,656,478,788
  5. Step 5: Solve for x
    x = 30,926,767,656,478,788/278,502,910.80
  6. Step 6: Final answer
    x = 111,046,479.08

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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.