Home / 211,541.80-317,312.70-71,285.80

Finding the Fourth Proportional to 211,541.80, 317,312.70 and 71,285.80

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Solution

The fourth proportional to 211,541.80, 317,312.70 and 71,285.80 is: 106,928.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,541.80 : 317,312.70 = 71,285.80 : x
  2. Step 2: Convert to fraction form
    211,541.80/317,312.70 = 71,285.80/x
  3. Step 3: Cross multiply
    211,541.80x = 317,312.70 × 71,285.80
  4. Step 4: Simplify right side
    211,541.80x = 22,619,889,669.66
  5. Step 5: Solve for x
    x = 22,619,889,669.66/211,541.80
  6. Step 6: Final answer
    x = 106,928.70

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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.