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Finding the Fourth Proportional to 351,451.90, 527,068.81 and 126,783.01

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Solution

The fourth proportional to 351,451.90, 527,068.81 and 126,783.01 is: 190,135.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,451.90 : 527,068.81 = 126,783.01 : x
  2. Step 2: Convert to fraction form
    351,451.90/527,068.81 = 126,783.01/x
  3. Step 3: Cross multiply
    351,451.90x = 527,068.81 × 126,783.01
  4. Step 4: Simplify right side
    351,451.90x = 66,823,371,795.46
  5. Step 5: Solve for x
    x = 66,823,371,795.46/351,451.90
  6. Step 6: Final answer
    x = 190,135.18

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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.