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Finding the Fourth Proportional to 293,159.40, 439,739.10 and 258,138.60

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Solution

The fourth proportional to 293,159.40, 439,739.10 and 258,138.60 is: 387,207.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,159.40 : 439,739.10 = 258,138.60 : x
  2. Step 2: Convert to fraction form
    293,159.40/439,739.10 = 258,138.60/x
  3. Step 3: Cross multiply
    293,159.40x = 439,739.10 × 258,138.60
  4. Step 4: Simplify right side
    293,159.40x = 113,513,635,639.26
  5. Step 5: Solve for x
    x = 113,513,635,639.26/293,159.40
  6. Step 6: Final answer
    x = 387,207.90

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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.