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Finding the Fourth Proportional to 348,498.81, 521,427.65 and 206,420.31

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Solution

The fourth proportional to 348,498.81, 521,427.65 and 206,420.31 is: 308,848.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,498.81 : 521,427.65 = 206,420.31 : x
  2. Step 2: Convert to fraction form
    348,498.81/521,427.65 = 206,420.31/x
  3. Step 3: Cross multiply
    348,498.81x = 521,427.65 × 206,420.31
  4. Step 4: Simplify right side
    348,498.81x = 107,633,256,123.47
  5. Step 5: Solve for x
    x = 107,633,256,123.47/348,498.81
  6. Step 6: Final answer
    x = 308,848.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.