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Finding the Fourth Proportional to 425,183, 637,803.66 and 140,873

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Solution

The fourth proportional to 425,183, 637,803.66 and 140,873 is: 211,319.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,183 : 637,803.66 = 140,873 : x
  2. Step 2: Convert to fraction form
    425,183/637,803.66 = 140,873/x
  3. Step 3: Cross multiply
    425,183x = 637,803.66 × 140,873
  4. Step 4: Simplify right side
    425,183x = 89,849,314,995.18
  5. Step 5: Solve for x
    x = 89,849,314,995.18/425,183
  6. Step 6: Final answer
    x = 211,319.16

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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.