Home / 278,721.17-384,636.18-164,004.20

Finding the Fourth Proportional to 278,721.17, 384,636.18 and 164,004.20

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Solution

The fourth proportional to 278,721.17, 384,636.18 and 164,004.20 is: 226,326.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,721.17 : 384,636.18 = 164,004.20 : x
  2. Step 2: Convert to fraction form
    278,721.17/384,636.18 = 164,004.20/x
  3. Step 3: Cross multiply
    278,721.17x = 384,636.18 × 164,004.20
  4. Step 4: Simplify right side
    278,721.17x = 63,081,948,991.96
  5. Step 5: Solve for x
    x = 63,081,948,991.96/278,721.17
  6. Step 6: Final answer
    x = 226,326.36

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1.5x scale

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.