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Finding the Fourth Proportional to 293,117.40, 438,363.90 and 245,878.20

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Solution

The fourth proportional to 293,117.40, 438,363.90 and 245,878.20 is: 367,716.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,117.40 : 438,363.90 = 245,878.20 : x
  2. Step 2: Convert to fraction form
    293,117.40/438,363.90 = 245,878.20/x
  3. Step 3: Cross multiply
    293,117.40x = 438,363.90 × 245,878.20
  4. Step 4: Simplify right side
    293,117.40x = 107,784,126,676.98
  5. Step 5: Solve for x
    x = 107,784,126,676.98/293,117.40
  6. Step 6: Final answer
    x = 367,716.58

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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.