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Finding the Fourth Proportional to 290,133.72, 435,334.68 and 132,410.52

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Solution

The fourth proportional to 290,133.72, 435,334.68 and 132,410.52 is: 198,676.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,133.72 : 435,334.68 = 132,410.52 : x
  2. Step 2: Convert to fraction form
    290,133.72/435,334.68 = 132,410.52/x
  3. Step 3: Cross multiply
    290,133.72x = 435,334.68 × 132,410.52
  4. Step 4: Simplify right side
    290,133.72x = 57,642,891,352.83
  5. Step 5: Solve for x
    x = 57,642,891,352.83/290,133.72
  6. Step 6: Final answer
    x = 198,676.98

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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.