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Finding the Fourth Proportional to 293,018.70, 439,528.05 and 71,402.70

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Solution

The fourth proportional to 293,018.70, 439,528.05 and 71,402.70 is: 107,104.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,018.70 : 439,528.05 = 71,402.70 : x
  2. Step 2: Convert to fraction form
    293,018.70/439,528.05 = 71,402.70/x
  3. Step 3: Cross multiply
    293,018.70x = 439,528.05 × 71,402.70
  4. Step 4: Simplify right side
    293,018.70x = 31,383,489,495.74
  5. Step 5: Solve for x
    x = 31,383,489,495.74/293,018.70
  6. Step 6: Final answer
    x = 107,104.05

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1.5x scale

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.