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Finding the Fourth Proportional to 235,144.82, 324,490.64 and 139,649.06

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Solution

The fourth proportional to 235,144.82, 324,490.64 and 139,649.06 is: 192,710.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,144.82 : 324,490.64 = 139,649.06 : x
  2. Step 2: Convert to fraction form
    235,144.82/324,490.64 = 139,649.06/x
  3. Step 3: Cross multiply
    235,144.82x = 324,490.64 × 139,649.06
  4. Step 4: Simplify right side
    235,144.82x = 45,314,812,854.80
  5. Step 5: Solve for x
    x = 45,314,812,854.80/235,144.82
  6. Step 6: Final answer
    x = 192,710.23

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1.5x scale

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.