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Finding the Fourth Proportional to 279,810.31, 386,126.97 and 152,483.17

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Solution

The fourth proportional to 279,810.31, 386,126.97 and 152,483.17 is: 210,420.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,810.31 : 386,126.97 = 152,483.17 : x
  2. Step 2: Convert to fraction form
    279,810.31/386,126.97 = 152,483.17/x
  3. Step 3: Cross multiply
    279,810.31x = 386,126.97 × 152,483.17
  4. Step 4: Simplify right side
    279,810.31x = 58,877,864,408.09
  5. Step 5: Solve for x
    x = 58,877,864,408.09/279,810.31
  6. Step 6: Final answer
    x = 210,420.64

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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.