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Finding the Fourth Proportional to 212,254.63, 292,912.20 and 115,458.48

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Solution

The fourth proportional to 212,254.63, 292,912.20 and 115,458.48 is: 159,333.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,254.63 : 292,912.20 = 115,458.48 : x
  2. Step 2: Convert to fraction form
    212,254.63/292,912.20 = 115,458.48/x
  3. Step 3: Cross multiply
    212,254.63x = 292,912.20 × 115,458.48
  4. Step 4: Simplify right side
    212,254.63x = 33,819,197,385.46
  5. Step 5: Solve for x
    x = 33,819,197,385.46/212,254.63
  6. Step 6: Final answer
    x = 159,333.15

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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.