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Finding the Fourth Proportional to 478,638.57, 718,169.85 and 250,880.07

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Solution

The fourth proportional to 478,638.57, 718,169.85 and 250,880.07 is: 376,431.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,638.57 : 718,169.85 = 250,880.07 : x
  2. Step 2: Convert to fraction form
    478,638.57/718,169.85 = 250,880.07/x
  3. Step 3: Cross multiply
    478,638.57x = 718,169.85 × 250,880.07
  4. Step 4: Simplify right side
    478,638.57x = 180,174,502,239.89
  5. Step 5: Solve for x
    x = 180,174,502,239.89/478,638.57
  6. Step 6: Final answer
    x = 376,431.22

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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.