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Finding the Fourth Proportional to 615,085.20, 922,541.40 and 194,403.60

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Solution

The fourth proportional to 615,085.20, 922,541.40 and 194,403.60 is: 291,578.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,085.20 : 922,541.40 = 194,403.60 : x
  2. Step 2: Convert to fraction form
    615,085.20/922,541.40 = 194,403.60/x
  3. Step 3: Cross multiply
    615,085.20x = 922,541.40 × 194,403.60
  4. Step 4: Simplify right side
    615,085.20x = 179,345,369,309.04
  5. Step 5: Solve for x
    x = 179,345,369,309.04/615,085.20
  6. Step 6: Final answer
    x = 291,578.09

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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.