Home / 381,815.79-526,875.05-220,681.28

Finding the Fourth Proportional to 381,815.79, 526,875.05 and 220,681.28

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Solution

The fourth proportional to 381,815.79, 526,875.05 and 220,681.28 is: 304,522.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,815.79 : 526,875.05 = 220,681.28 : x
  2. Step 2: Convert to fraction form
    381,815.79/526,875.05 = 220,681.28/x
  3. Step 3: Cross multiply
    381,815.79x = 526,875.05 × 220,681.28
  4. Step 4: Simplify right side
    381,815.79x = 116,271,456,696.28
  5. Step 5: Solve for x
    x = 116,271,456,696.28/381,815.79
  6. Step 6: Final answer
    x = 304,522.39

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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.