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Finding the Fourth Proportional to 211,866.80, 292,378.29 and 115,072.54

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Solution

The fourth proportional to 211,866.80, 292,378.29 and 115,072.54 is: 158,801.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,866.80 : 292,378.29 = 115,072.54 : x
  2. Step 2: Convert to fraction form
    211,866.80/292,378.29 = 115,072.54/x
  3. Step 3: Cross multiply
    211,866.80x = 292,378.29 × 115,072.54
  4. Step 4: Simplify right side
    211,866.80x = 33,644,712,471.16
  5. Step 5: Solve for x
    x = 33,644,712,471.16/211,866.80
  6. Step 6: Final answer
    x = 158,801.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.