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Finding the Fourth Proportional to 425,351.20, 637,239.60 and 247,943.20

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Solution

The fourth proportional to 425,351.20, 637,239.60 and 247,943.20 is: 371,455.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,351.20 : 637,239.60 = 247,943.20 : x
  2. Step 2: Convert to fraction form
    425,351.20/637,239.60 = 247,943.20/x
  3. Step 3: Cross multiply
    425,351.20x = 637,239.60 × 247,943.20
  4. Step 4: Simplify right side
    425,351.20x = 157,999,225,590.72
  5. Step 5: Solve for x
    x = 157,999,225,590.72/425,351.20
  6. Step 6: Final answer
    x = 371,455.93

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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.