Home / 640,557.74-960,876.24-214,131.94

Finding the Fourth Proportional to 640,557.74, 960,876.24 and 214,131.94

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Solution

The fourth proportional to 640,557.74, 960,876.24 and 214,131.94 is: 321,211.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,557.74 : 960,876.24 = 214,131.94 : x
  2. Step 2: Convert to fraction form
    640,557.74/960,876.24 = 214,131.94/x
  3. Step 3: Cross multiply
    640,557.74x = 960,876.24 × 214,131.94
  4. Step 4: Simplify right side
    640,557.74x = 205,754,293,371.11
  5. Step 5: Solve for x
    x = 205,754,293,371.11/640,557.74
  6. Step 6: Final answer
    x = 321,211.16

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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.