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Finding the Fourth Proportional to 458,366.80, 687,550.20 and 192,038.80

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Solution

The fourth proportional to 458,366.80, 687,550.20 and 192,038.80 is: 288,058.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,366.80 : 687,550.20 = 192,038.80 : x
  2. Step 2: Convert to fraction form
    458,366.80/687,550.20 = 192,038.80/x
  3. Step 3: Cross multiply
    458,366.80x = 687,550.20 × 192,038.80
  4. Step 4: Simplify right side
    458,366.80x = 132,036,315,347.76
  5. Step 5: Solve for x
    x = 132,036,315,347.76/458,366.80
  6. Step 6: Final answer
    x = 288,058.20

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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.