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Finding the Fourth Proportional to 615,015.88, 922,934.22 and 215,656.36

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Solution

The fourth proportional to 615,015.88, 922,934.22 and 215,656.36 is: 323,628.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,015.88 : 922,934.22 = 215,656.36 : x
  2. Step 2: Convert to fraction form
    615,015.88/922,934.22 = 215,656.36/x
  3. Step 3: Cross multiply
    615,015.88x = 922,934.22 × 215,656.36
  4. Step 4: Simplify right side
    615,015.88x = 199,036,634,404.64
  5. Step 5: Solve for x
    x = 199,036,634,404.64/615,015.88
  6. Step 6: Final answer
    x = 323,628.45

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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.