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Finding the Fourth Proportional to 620,091.20, 930,223.20 and 265,102.40

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Solution

The fourth proportional to 620,091.20, 930,223.20 and 265,102.40 is: 397,690.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,091.20 : 930,223.20 = 265,102.40 : x
  2. Step 2: Convert to fraction form
    620,091.20/930,223.20 = 265,102.40/x
  3. Step 3: Cross multiply
    620,091.20x = 930,223.20 × 265,102.40
  4. Step 4: Simplify right side
    620,091.20x = 246,604,402,855.68
  5. Step 5: Solve for x
    x = 246,604,402,855.68/620,091.20
  6. Step 6: Final answer
    x = 397,690.54

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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.