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Finding the Fourth Proportional to 425,182, 637,802.16 and 140,872

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Solution

The fourth proportional to 425,182, 637,802.16 and 140,872 is: 211,317.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,182 : 637,802.16 = 140,872 : x
  2. Step 2: Convert to fraction form
    425,182/637,802.16 = 140,872/x
  3. Step 3: Cross multiply
    425,182x = 637,802.16 × 140,872
  4. Step 4: Simplify right side
    425,182x = 89,848,465,883.52
  5. Step 5: Solve for x
    x = 89,848,465,883.52/425,182
  6. Step 6: Final answer
    x = 211,317.66

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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.