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Finding the Fourth Proportional to 278,345.35, 417,518.03 and 278,345.35

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Solution

The fourth proportional to 278,345.35, 417,518.03 and 278,345.35 is: 417,518.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,345.35 : 417,518.03 = 278,345.35 : x
  2. Step 2: Convert to fraction form
    278,345.35/417,518.03 = 278,345.35/x
  3. Step 3: Cross multiply
    278,345.35x = 417,518.03 × 278,345.35
  4. Step 4: Simplify right side
    278,345.35x = 116,214,202,191.66
  5. Step 5: Solve for x
    x = 116,214,202,191.66/278,345.35
  6. Step 6: Final answer
    x = 417,518.03

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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.