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Finding the Fourth Proportional to 240,143.16, 331,401.06 and 139,541.16

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Solution

The fourth proportional to 240,143.16, 331,401.06 and 139,541.16 is: 192,568.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,143.16 : 331,401.06 = 139,541.16 : x
  2. Step 2: Convert to fraction form
    240,143.16/331,401.06 = 139,541.16/x
  3. Step 3: Cross multiply
    240,143.16x = 331,401.06 × 139,541.16
  4. Step 4: Simplify right side
    240,143.16x = 46,244,088,337.63
  5. Step 5: Solve for x
    x = 46,244,088,337.63/240,143.16
  6. Step 6: Final answer
    x = 192,568.83

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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.