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Finding the Fourth Proportional to 507,267.20, 700,050.72 and 280,912.70

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Solution

The fourth proportional to 507,267.20, 700,050.72 and 280,912.70 is: 387,671.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,267.20 : 700,050.72 = 280,912.70 : x
  2. Step 2: Convert to fraction form
    507,267.20/700,050.72 = 280,912.70/x
  3. Step 3: Cross multiply
    507,267.20x = 700,050.72 × 280,912.70
  4. Step 4: Simplify right side
    507,267.20x = 196,653,134,391.89
  5. Step 5: Solve for x
    x = 196,653,134,391.89/507,267.20
  6. Step 6: Final answer
    x = 387,671.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.