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Finding the Fourth Proportional to 615,144.20, 922,716.30 and 260,040.20

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Solution

The fourth proportional to 615,144.20, 922,716.30 and 260,040.20 is: 390,060.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,144.20 : 922,716.30 = 260,040.20 : x
  2. Step 2: Convert to fraction form
    615,144.20/922,716.30 = 260,040.20/x
  3. Step 3: Cross multiply
    615,144.20x = 922,716.30 × 260,040.20
  4. Step 4: Simplify right side
    615,144.20x = 239,943,331,195.26
  5. Step 5: Solve for x
    x = 239,943,331,195.26/615,144.20
  6. Step 6: Final answer
    x = 390,060.30

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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.