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Finding the Fourth Proportional to 390,253.19, 584,959.83 and 255,266.42

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Solution

The fourth proportional to 390,253.19, 584,959.83 and 255,266.42 is: 382,624.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,253.19 : 584,959.83 = 255,266.42 : x
  2. Step 2: Convert to fraction form
    390,253.19/584,959.83 = 255,266.42/x
  3. Step 3: Cross multiply
    390,253.19x = 584,959.83 × 255,266.42
  4. Step 4: Simplify right side
    390,253.19x = 149,320,601,647.91
  5. Step 5: Solve for x
    x = 149,320,601,647.91/390,253.19
  6. Step 6: Final answer
    x = 382,624.94

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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.