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Finding the Fourth Proportional to 482,313.64, 665,560.26 and 278,373.16

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Solution

The fourth proportional to 482,313.64, 665,560.26 and 278,373.16 is: 384,136.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,313.64 : 665,560.26 = 278,373.16 : x
  2. Step 2: Convert to fraction form
    482,313.64/665,560.26 = 278,373.16/x
  3. Step 3: Cross multiply
    482,313.64x = 665,560.26 × 278,373.16
  4. Step 4: Simplify right side
    482,313.64x = 185,274,112,746.62
  5. Step 5: Solve for x
    x = 185,274,112,746.62/482,313.64
  6. Step 6: Final answer
    x = 384,136.17

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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.