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Finding the Fourth Proportional to 280,258.03, 420,553.05 and 262,525.87

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Solution

The fourth proportional to 280,258.03, 420,553.05 and 262,525.87 is: 393,944.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,258.03 : 420,553.05 = 262,525.87 : x
  2. Step 2: Convert to fraction form
    280,258.03/420,553.05 = 262,525.87/x
  3. Step 3: Cross multiply
    280,258.03x = 420,553.05 × 262,525.87
  4. Step 4: Simplify right side
    280,258.03x = 110,406,055,332.40
  5. Step 5: Solve for x
    x = 110,406,055,332.40/280,258.03
  6. Step 6: Final answer
    x = 393,944.31

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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.