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Finding the Fourth Proportional to 330,345.66, 495,551.20 and 105,649.64

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Solution

The fourth proportional to 330,345.66, 495,551.20 and 105,649.64 is: 158,484.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,345.66 : 495,551.20 = 105,649.64 : x
  2. Step 2: Convert to fraction form
    330,345.66/495,551.20 = 105,649.64/x
  3. Step 3: Cross multiply
    330,345.66x = 495,551.20 × 105,649.64
  4. Step 4: Simplify right side
    330,345.66x = 52,354,805,881.57
  5. Step 5: Solve for x
    x = 52,354,805,881.57/330,345.66
  6. Step 6: Final answer
    x = 158,484.92

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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.