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Finding the Fourth Proportional to 390,846.90, 587,254.50 and 248,757.52

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Solution

The fourth proportional to 390,846.90, 587,254.50 and 248,757.52 is: 373,762.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,846.90 : 587,254.50 = 248,757.52 : x
  2. Step 2: Convert to fraction form
    390,846.90/587,254.50 = 248,757.52/x
  3. Step 3: Cross multiply
    390,846.90x = 587,254.50 × 248,757.52
  4. Step 4: Simplify right side
    390,846.90x = 146,083,973,028.84
  5. Step 5: Solve for x
    x = 146,083,973,028.84/390,846.90
  6. Step 6: Final answer
    x = 373,762.65

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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.