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Finding the Fourth Proportional to 482,407.61, 665,615.21 and 278,415.29

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Solution

The fourth proportional to 482,407.61, 665,615.21 and 278,415.29 is: 384,151.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,407.61 : 665,615.21 = 278,415.29 : x
  2. Step 2: Convert to fraction form
    482,407.61/665,615.21 = 278,415.29/x
  3. Step 3: Cross multiply
    482,407.61x = 665,615.21 × 278,415.29
  4. Step 4: Simplify right side
    482,407.61x = 185,317,450,328.48
  5. Step 5: Solve for x
    x = 185,317,450,328.48/482,407.61
  6. Step 6: Final answer
    x = 384,151.18

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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.