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Finding the Fourth Proportional to 519,349.16, 716,821.26 and 304,558.40

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Solution

The fourth proportional to 519,349.16, 716,821.26 and 304,558.40 is: 420,360.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,349.16 : 716,821.26 = 304,558.40 : x
  2. Step 2: Convert to fraction form
    519,349.16/716,821.26 = 304,558.40/x
  3. Step 3: Cross multiply
    519,349.16x = 716,821.26 × 304,558.40
  4. Step 4: Simplify right side
    519,349.16x = 218,313,936,031.58
  5. Step 5: Solve for x
    x = 218,313,936,031.58/519,349.16
  6. Step 6: Final answer
    x = 420,360.62

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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.