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Finding the Fourth Proportional to 211,615.20, 317,077.20 and 181,893.60

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Solution

The fourth proportional to 211,615.20, 317,077.20 and 181,893.60 is: 272,543.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,615.20 : 317,077.20 = 181,893.60 : x
  2. Step 2: Convert to fraction form
    211,615.20/317,077.20 = 181,893.60/x
  3. Step 3: Cross multiply
    211,615.20x = 317,077.20 × 181,893.60
  4. Step 4: Simplify right side
    211,615.20x = 57,674,313,385.92
  5. Step 5: Solve for x
    x = 57,674,313,385.92/211,615.20
  6. Step 6: Final answer
    x = 272,543.34

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1.5x scale

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.