Home / 211,726.18-317,347.68-85,285.45

Finding the Fourth Proportional to 211,726.18, 317,347.68 and 85,285.45

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Solution

The fourth proportional to 211,726.18, 317,347.68 and 85,285.45 is: 127,830.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,726.18 : 317,347.68 = 85,285.45 : x
  2. Step 2: Convert to fraction form
    211,726.18/317,347.68 = 85,285.45/x
  3. Step 3: Cross multiply
    211,726.18x = 317,347.68 × 85,285.45
  4. Step 4: Simplify right side
    211,726.18x = 27,065,139,695.26
  5. Step 5: Solve for x
    x = 27,065,139,695.26/211,726.18
  6. Step 6: Final answer
    x = 127,830.86

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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.