Home / 278,508,836.69-384,351,409.39-153,065,479.06

Finding the Fourth Proportional to 278,508,836.69, 384,351,409.39 and 153,065,479.06

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Solution

The fourth proportional to 278,508,836.69, 384,351,409.39 and 153,065,479.06 is: 211,235,425.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,508,836.69 : 384,351,409.39 = 153,065,479.06 : x
  2. Step 2: Convert to fraction form
    278,508,836.69/384,351,409.39 = 153,065,479.06/x
  3. Step 3: Cross multiply
    278,508,836.69x = 384,351,409.39 × 153,065,479.06
  4. Step 4: Simplify right side
    278,508,836.69x = 58,830,932,605,666,528
  5. Step 5: Solve for x
    x = 58,830,932,605,666,528/278,508,836.69
  6. Step 6: Final answer
    x = 211,235,425.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.