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Finding the Fourth Proportional to 439,626.96, 606,689.28 and 258,342.84

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Solution

The fourth proportional to 439,626.96, 606,689.28 and 258,342.84 is: 356,515.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,626.96 : 606,689.28 = 258,342.84 : x
  2. Step 2: Convert to fraction form
    439,626.96/606,689.28 = 258,342.84/x
  3. Step 3: Cross multiply
    439,626.96x = 606,689.28 × 258,342.84
  4. Step 4: Simplify right side
    439,626.96x = 156,733,831,592.76
  5. Step 5: Solve for x
    x = 156,733,831,592.76/439,626.96
  6. Step 6: Final answer
    x = 356,515.51

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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.