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Finding the Fourth Proportional to 293,208.20, 439,293.90 and 260,030.60

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Solution

The fourth proportional to 293,208.20, 439,293.90 and 260,030.60 is: 389,586.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,208.20 : 439,293.90 = 260,030.60 : x
  2. Step 2: Convert to fraction form
    293,208.20/439,293.90 = 260,030.60/x
  3. Step 3: Cross multiply
    293,208.20x = 439,293.90 × 260,030.60
  4. Step 4: Simplify right side
    293,208.20x = 114,229,856,393.34
  5. Step 5: Solve for x
    x = 114,229,856,393.34/293,208.20
  6. Step 6: Final answer
    x = 389,586.16

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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.