Home / 489,278.98-734,105.28-189,969.71

Finding the Fourth Proportional to 489,278.98, 734,105.28 and 189,969.71

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Solution

The fourth proportional to 489,278.98, 734,105.28 and 189,969.71 is: 285,027.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,278.98 : 734,105.28 = 189,969.71 : x
  2. Step 2: Convert to fraction form
    489,278.98/734,105.28 = 189,969.71/x
  3. Step 3: Cross multiply
    489,278.98x = 734,105.28 × 189,969.71
  4. Step 4: Simplify right side
    489,278.98x = 139,457,767,151.07
  5. Step 5: Solve for x
    x = 139,457,767,151.07/489,278.98
  6. Step 6: Final answer
    x = 285,027.10

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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.