Home / 278,541,816.23-384,391,701.05-153,105,624.77

Finding the Fourth Proportional to 278,541,816.23, 384,391,701.05 and 153,105,624.77

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Solution

The fourth proportional to 278,541,816.23, 384,391,701.05 and 153,105,624.77 is: 211,287,957.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,541,816.23 : 384,391,701.05 = 153,105,624.77 : x
  2. Step 2: Convert to fraction form
    278,541,816.23/384,391,701.05 = 153,105,624.77/x
  3. Step 3: Cross multiply
    278,541,816.23x = 384,391,701.05 × 153,105,624.77
  4. Step 4: Simplify right side
    278,541,816.23x = 58,852,531,542,975,824
  5. Step 5: Solve for x
    x = 58,852,531,542,975,824/278,541,816.23
  6. Step 6: Final answer
    x = 211,287,957.91

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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.