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Finding the Fourth Proportional to 425,181, 637,800.66 and 140,871

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Solution

The fourth proportional to 425,181, 637,800.66 and 140,871 is: 211,316.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,181 : 637,800.66 = 140,871 : x
  2. Step 2: Convert to fraction form
    425,181/637,800.66 = 140,871/x
  3. Step 3: Cross multiply
    425,181x = 637,800.66 × 140,871
  4. Step 4: Simplify right side
    425,181x = 89,847,616,774.86
  5. Step 5: Solve for x
    x = 89,847,616,774.86/425,181
  6. Step 6: Final answer
    x = 211,316.16

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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.