Home / 211,547.08-317,252.58-111,649.78

Finding the Fourth Proportional to 211,547.08, 317,252.58 and 111,649.78

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Solution

The fourth proportional to 211,547.08, 317,252.58 and 111,649.78 is: 167,438.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,547.08 : 317,252.58 = 111,649.78 : x
  2. Step 2: Convert to fraction form
    211,547.08/317,252.58 = 111,649.78/x
  3. Step 3: Cross multiply
    211,547.08x = 317,252.58 × 111,649.78
  4. Step 4: Simplify right side
    211,547.08x = 35,421,180,761.43
  5. Step 5: Solve for x
    x = 35,421,180,761.43/211,547.08
  6. Step 6: Final answer
    x = 167,438.76

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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.