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Finding the Fourth Proportional to 253,862.50, 350,334.08 and 139,140.23

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Solution

The fourth proportional to 253,862.50, 350,334.08 and 139,140.23 is: 192,015.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,862.50 : 350,334.08 = 139,140.23 : x
  2. Step 2: Convert to fraction form
    253,862.50/350,334.08 = 139,140.23/x
  3. Step 3: Cross multiply
    253,862.50x = 350,334.08 × 139,140.23
  4. Step 4: Simplify right side
    253,862.50x = 48,745,562,020.67
  5. Step 5: Solve for x
    x = 48,745,562,020.67/253,862.50
  6. Step 6: Final answer
    x = 192,015.61

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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.