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Finding the Fourth Proportional to 456,411.60, 684,714.60 and 140,900.40

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Solution

The fourth proportional to 456,411.60, 684,714.60 and 140,900.40 is: 211,380.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,411.60 : 684,714.60 = 140,900.40 : x
  2. Step 2: Convert to fraction form
    456,411.60/684,714.60 = 140,900.40/x
  3. Step 3: Cross multiply
    456,411.60x = 684,714.60 × 140,900.40
  4. Step 4: Simplify right side
    456,411.60x = 96,476,561,025.84
  5. Step 5: Solve for x
    x = 96,476,561,025.84/456,411.60
  6. Step 6: Final answer
    x = 211,380.61

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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.