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Finding the Fourth Proportional to 265,827.96, 398,673.90 and 78,795.72

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Solution

The fourth proportional to 265,827.96, 398,673.90 and 78,795.72 is: 118,173.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,827.96 : 398,673.90 = 78,795.72 : x
  2. Step 2: Convert to fraction form
    265,827.96/398,673.90 = 78,795.72/x
  3. Step 3: Cross multiply
    265,827.96x = 398,673.90 × 78,795.72
  4. Step 4: Simplify right side
    265,827.96x = 31,413,796,995.71
  5. Step 5: Solve for x
    x = 31,413,796,995.71/265,827.96
  6. Step 6: Final answer
    x = 118,173.41

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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.