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Finding the Fourth Proportional to 381,533.88, 526,541.40 and 220,395.72

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Solution

The fourth proportional to 381,533.88, 526,541.40 and 220,395.72 is: 304,160.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,533.88 : 526,541.40 = 220,395.72 : x
  2. Step 2: Convert to fraction form
    381,533.88/526,541.40 = 220,395.72/x
  3. Step 3: Cross multiply
    381,533.88x = 526,541.40 × 220,395.72
  4. Step 4: Simplify right side
    381,533.88x = 116,047,470,962.81
  5. Step 5: Solve for x
    x = 116,047,470,962.81/381,533.88
  6. Step 6: Final answer
    x = 304,160.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.