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Finding the Fourth Proportional to 610,351.50, 842,295.21 and 338,430.87

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Solution

The fourth proportional to 610,351.50, 842,295.21 and 338,430.87 is: 467,040.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,351.50 : 842,295.21 = 338,430.87 : x
  2. Step 2: Convert to fraction form
    610,351.50/842,295.21 = 338,430.87/x
  3. Step 3: Cross multiply
    610,351.50x = 842,295.21 × 338,430.87
  4. Step 4: Simplify right side
    610,351.50x = 285,058,700,717.13
  5. Step 5: Solve for x
    x = 285,058,700,717.13/610,351.50
  6. Step 6: Final answer
    x = 467,040.22

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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.