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Finding the Fourth Proportional to 518,811.26, 778,240.75 and 158,956.34

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Solution

The fourth proportional to 518,811.26, 778,240.75 and 158,956.34 is: 238,441.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,811.26 : 778,240.75 = 158,956.34 : x
  2. Step 2: Convert to fraction form
    518,811.26/778,240.75 = 158,956.34/x
  3. Step 3: Cross multiply
    518,811.26x = 778,240.75 × 158,956.34
  4. Step 4: Simplify right side
    518,811.26x = 123,706,301,258.86
  5. Step 5: Solve for x
    x = 123,706,301,258.86/518,811.26
  6. Step 6: Final answer
    x = 238,441.82

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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.