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Finding the Fourth Proportional to 234,411.84, 351,512.64 and 139,686.72

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Solution

The fourth proportional to 234,411.84, 351,512.64 and 139,686.72 is: 209,467.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,411.84 : 351,512.64 = 139,686.72 : x
  2. Step 2: Convert to fraction form
    234,411.84/351,512.64 = 139,686.72/x
  3. Step 3: Cross multiply
    234,411.84x = 351,512.64 × 139,686.72
  4. Step 4: Simplify right side
    234,411.84x = 49,101,647,720.14
  5. Step 5: Solve for x
    x = 49,101,647,720.14/234,411.84
  6. Step 6: Final answer
    x = 209,467.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.