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Finding the Fourth Proportional to 615,110.10, 922,665.15 and 171,878.10

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Solution

The fourth proportional to 615,110.10, 922,665.15 and 171,878.10 is: 257,817.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,110.10 : 922,665.15 = 171,878.10 : x
  2. Step 2: Convert to fraction form
    615,110.10/922,665.15 = 171,878.10/x
  3. Step 3: Cross multiply
    615,110.10x = 922,665.15 × 171,878.10
  4. Step 4: Simplify right side
    615,110.10x = 158,585,932,918.22
  5. Step 5: Solve for x
    x = 158,585,932,918.22/615,110.10
  6. Step 6: Final answer
    x = 257,817.15

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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.