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Finding the Fourth Proportional to 358,959.40, 538,434.30 and 109,642.60

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Solution

The fourth proportional to 358,959.40, 538,434.30 and 109,642.60 is: 164,462.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,959.40 : 538,434.30 = 109,642.60 : x
  2. Step 2: Convert to fraction form
    358,959.40/538,434.30 = 109,642.60/x
  3. Step 3: Cross multiply
    358,959.40x = 538,434.30 × 109,642.60
  4. Step 4: Simplify right side
    358,959.40x = 59,035,336,581.18
  5. Step 5: Solve for x
    x = 59,035,336,581.18/358,959.40
  6. Step 6: Final answer
    x = 164,462.43

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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.