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Finding the Fourth Proportional to 615,239.25, 922,951.12 and 215,809.67

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Solution

The fourth proportional to 615,239.25, 922,951.12 and 215,809.67 is: 323,746.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,239.25 : 922,951.12 = 215,809.67 : x
  2. Step 2: Convert to fraction form
    615,239.25/922,951.12 = 215,809.67/x
  3. Step 3: Cross multiply
    615,239.25x = 922,951.12 × 215,809.67
  4. Step 4: Simplify right side
    615,239.25x = 199,181,772,018.58
  5. Step 5: Solve for x
    x = 199,181,772,018.58/615,239.25
  6. Step 6: Final answer
    x = 323,746.86

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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.