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Finding the Fourth Proportional to 482,490.51, 665,824.05 and 278,534.53

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Solution

The fourth proportional to 482,490.51, 665,824.05 and 278,534.53 is: 384,370.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,490.51 : 665,824.05 = 278,534.53 : x
  2. Step 2: Convert to fraction form
    482,490.51/665,824.05 = 278,534.53/x
  3. Step 3: Cross multiply
    482,490.51x = 665,824.05 × 278,534.53
  4. Step 4: Simplify right side
    482,490.51x = 185,454,989,661.73
  5. Step 5: Solve for x
    x = 185,454,989,661.73/482,490.51
  6. Step 6: Final answer
    x = 384,370.24

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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.