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Finding the Fourth Proportional to 265,400.04, 398,100.06 and 78,396.96

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Solution

The fourth proportional to 265,400.04, 398,100.06 and 78,396.96 is: 117,595.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,400.04 : 398,100.06 = 78,396.96 : x
  2. Step 2: Convert to fraction form
    265,400.04/398,100.06 = 78,396.96/x
  3. Step 3: Cross multiply
    265,400.04x = 398,100.06 × 78,396.96
  4. Step 4: Simplify right side
    265,400.04x = 31,209,834,479.82
  5. Step 5: Solve for x
    x = 31,209,834,479.82/265,400.04
  6. Step 6: Final answer
    x = 117,595.44

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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.