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Finding the Fourth Proportional to 385,289.66, 577,790.75 and 132,498.59

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Solution

The fourth proportional to 385,289.66, 577,790.75 and 132,498.59 is: 198,698.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,289.66 : 577,790.75 = 132,498.59 : x
  2. Step 2: Convert to fraction form
    385,289.66/577,790.75 = 132,498.59/x
  3. Step 3: Cross multiply
    385,289.66x = 577,790.75 × 132,498.59
  4. Step 4: Simplify right side
    385,289.66x = 76,556,457,132.34
  5. Step 5: Solve for x
    x = 76,556,457,132.34/385,289.66
  6. Step 6: Final answer
    x = 198,698.45

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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.