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Finding the Fourth Proportional to 425,135.92, 637,266.48 and 188,590

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Solution

The fourth proportional to 425,135.92, 637,266.48 and 188,590 is: 282,690.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,135.92 : 637,266.48 = 188,590 : x
  2. Step 2: Convert to fraction form
    425,135.92/637,266.48 = 188,590/x
  3. Step 3: Cross multiply
    425,135.92x = 637,266.48 × 188,590
  4. Step 4: Simplify right side
    425,135.92x = 120,182,085,463.20
  5. Step 5: Solve for x
    x = 120,182,085,463.20/425,135.92
  6. Step 6: Final answer
    x = 282,690.97

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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.