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Finding the Fourth Proportional to 265,503.44, 398,107.51 and 87,913.57

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Solution

The fourth proportional to 265,503.44, 398,107.51 and 87,913.57 is: 131,821.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,503.44 : 398,107.51 = 87,913.57 : x
  2. Step 2: Convert to fraction form
    265,503.44/398,107.51 = 87,913.57/x
  3. Step 3: Cross multiply
    265,503.44x = 398,107.51 × 87,913.57
  4. Step 4: Simplify right side
    265,503.44x = 34,999,050,017.81
  5. Step 5: Solve for x
    x = 34,999,050,017.81/265,503.44
  6. Step 6: Final answer
    x = 131,821.46

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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.