Home / 278,726.08-384,641.68-151,400.78

Finding the Fourth Proportional to 278,726.08, 384,641.68 and 151,400.78

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Solution

The fourth proportional to 278,726.08, 384,641.68 and 151,400.78 is: 208,932.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,726.08 : 384,641.68 = 151,400.78 : x
  2. Step 2: Convert to fraction form
    278,726.08/384,641.68 = 151,400.78/x
  3. Step 3: Cross multiply
    278,726.08x = 384,641.68 × 151,400.78
  4. Step 4: Simplify right side
    278,726.08x = 58,235,050,372.51
  5. Step 5: Solve for x
    x = 58,235,050,372.51/278,726.08
  6. Step 6: Final answer
    x = 208,932.91

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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.