Home / 459,080.10-688,717.35-139,205.70

Finding the Fourth Proportional to 459,080.10, 688,717.35 and 139,205.70

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Solution

The fourth proportional to 459,080.10, 688,717.35 and 139,205.70 is: 208,838.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,080.10 : 688,717.35 = 139,205.70 : x
  2. Step 2: Convert to fraction form
    459,080.10/688,717.35 = 139,205.70/x
  3. Step 3: Cross multiply
    459,080.10x = 688,717.35 × 139,205.70
  4. Step 4: Simplify right side
    459,080.10x = 95,873,380,808.90
  5. Step 5: Solve for x
    x = 95,873,380,808.90/459,080.10
  6. Step 6: Final answer
    x = 208,838.02

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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.