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Finding the Fourth Proportional to 372,258.53, 556,978.71 and 220,537.06

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Solution

The fourth proportional to 372,258.53, 556,978.71 and 220,537.06 is: 329,970.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,258.53 : 556,978.71 = 220,537.06 : x
  2. Step 2: Convert to fraction form
    372,258.53/556,978.71 = 220,537.06/x
  3. Step 3: Cross multiply
    372,258.53x = 556,978.71 × 220,537.06
  4. Step 4: Simplify right side
    372,258.53x = 122,834,447,185.99
  5. Step 5: Solve for x
    x = 122,834,447,185.99/372,258.53
  6. Step 6: Final answer
    x = 329,970.81

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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.