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Finding the Fourth Proportional to 339,820.48, 468,964.32 and 186,870.40

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Solution

The fourth proportional to 339,820.48, 468,964.32 and 186,870.40 is: 257,887.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,820.48 : 468,964.32 = 186,870.40 : x
  2. Step 2: Convert to fraction form
    339,820.48/468,964.32 = 186,870.40/x
  3. Step 3: Cross multiply
    339,820.48x = 468,964.32 × 186,870.40
  4. Step 4: Simplify right side
    339,820.48x = 87,635,550,064.13
  5. Step 5: Solve for x
    x = 87,635,550,064.13/339,820.48
  6. Step 6: Final answer
    x = 257,887.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.