Home / 211,649.83-317,578.52-99,339.18

Finding the Fourth Proportional to 211,649.83, 317,578.52 and 99,339.18

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Solution

The fourth proportional to 211,649.83, 317,578.52 and 99,339.18 is: 149,057.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,649.83 : 317,578.52 = 99,339.18 : x
  2. Step 2: Convert to fraction form
    211,649.83/317,578.52 = 99,339.18/x
  3. Step 3: Cross multiply
    211,649.83x = 317,578.52 × 99,339.18
  4. Step 4: Simplify right side
    211,649.83x = 31,547,988,819.84
  5. Step 5: Solve for x
    x = 31,547,988,819.84/211,649.83
  6. Step 6: Final answer
    x = 149,057.47

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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.