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Finding the Fourth Proportional to 620,113.62, 930,267.90 and 265,129.50

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Solution

The fourth proportional to 620,113.62, 930,267.90 and 265,129.50 is: 397,735.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,113.62 : 930,267.90 = 265,129.50 : x
  2. Step 2: Convert to fraction form
    620,113.62/930,267.90 = 265,129.50/x
  3. Step 3: Cross multiply
    620,113.62x = 930,267.90 × 265,129.50
  4. Step 4: Simplify right side
    620,113.62x = 246,641,463,193.05
  5. Step 5: Solve for x
    x = 246,641,463,193.05/620,113.62
  6. Step 6: Final answer
    x = 397,735.92

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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.