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Finding the Fourth Proportional to 279,801.78, 386,126.52 and 152,477.40

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Solution

The fourth proportional to 279,801.78, 386,126.52 and 152,477.40 is: 210,418.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,801.78 : 386,126.52 = 152,477.40 : x
  2. Step 2: Convert to fraction form
    279,801.78/386,126.52 = 152,477.40/x
  3. Step 3: Cross multiply
    279,801.78x = 386,126.52 × 152,477.40
  4. Step 4: Simplify right side
    279,801.78x = 58,875,567,840.65
  5. Step 5: Solve for x
    x = 58,875,567,840.65/279,801.78
  6. Step 6: Final answer
    x = 210,418.85

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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.