Home / 278,587.52-384,484.78-163,860.69

Finding the Fourth Proportional to 278,587.52, 384,484.78 and 163,860.69

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Solution

The fourth proportional to 278,587.52, 384,484.78 and 163,860.69 is: 226,147.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,587.52 : 384,484.78 = 163,860.69 : x
  2. Step 2: Convert to fraction form
    278,587.52/384,484.78 = 163,860.69/x
  3. Step 3: Cross multiply
    278,587.52x = 384,484.78 × 163,860.69
  4. Step 4: Simplify right side
    278,587.52x = 63,001,941,345.30
  5. Step 5: Solve for x
    x = 63,001,941,345.30/278,587.52
  6. Step 6: Final answer
    x = 226,147.75

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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.