Home / 211,710.50-317,628.13-85,285.69

Finding the Fourth Proportional to 211,710.50, 317,628.13 and 85,285.69

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Solution

The fourth proportional to 211,710.50, 317,628.13 and 85,285.69 is: 127,953.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,710.50 : 317,628.13 = 85,285.69 : x
  2. Step 2: Convert to fraction form
    211,710.50/317,628.13 = 85,285.69/x
  3. Step 3: Cross multiply
    211,710.50x = 317,628.13 × 85,285.69
  4. Step 4: Simplify right side
    211,710.50x = 27,089,133,649.60
  5. Step 5: Solve for x
    x = 27,089,133,649.60/211,710.50
  6. Step 6: Final answer
    x = 127,953.66

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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.