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Finding the Fourth Proportional to 261,955.20, 392,602.40 and 112,018.24

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Solution

The fourth proportional to 261,955.20, 392,602.40 and 112,018.24 is: 167,886.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,955.20 : 392,602.40 = 112,018.24 : x
  2. Step 2: Convert to fraction form
    261,955.20/392,602.40 = 112,018.24/x
  3. Step 3: Cross multiply
    261,955.20x = 392,602.40 × 112,018.24
  4. Step 4: Simplify right side
    261,955.20x = 43,978,629,867.78
  5. Step 5: Solve for x
    x = 43,978,629,867.78/261,955.20
  6. Step 6: Final answer
    x = 167,886.07

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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.