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Finding the Fourth Proportional to 330,615.47, 495,969.90 and 105,923.34

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Solution

The fourth proportional to 330,615.47, 495,969.90 and 105,923.34 is: 158,899.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,615.47 : 495,969.90 = 105,923.34 : x
  2. Step 2: Convert to fraction form
    330,615.47/495,969.90 = 105,923.34/x
  3. Step 3: Cross multiply
    330,615.47x = 495,969.90 × 105,923.34
  4. Step 4: Simplify right side
    330,615.47x = 52,534,788,347.47
  5. Step 5: Solve for x
    x = 52,534,788,347.47/330,615.47
  6. Step 6: Final answer
    x = 158,899.97

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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.