Home / 211,547.60-317,321.40-127,566.80

Finding the Fourth Proportional to 211,547.60, 317,321.40 and 127,566.80

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Solution

The fourth proportional to 211,547.60, 317,321.40 and 127,566.80 is: 191,350.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,547.60 : 317,321.40 = 127,566.80 : x
  2. Step 2: Convert to fraction form
    211,547.60/317,321.40 = 127,566.80/x
  3. Step 3: Cross multiply
    211,547.60x = 317,321.40 × 127,566.80
  4. Step 4: Simplify right side
    211,547.60x = 40,479,675,569.52
  5. Step 5: Solve for x
    x = 40,479,675,569.52/211,547.60
  6. Step 6: Final answer
    x = 191,350.20

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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.