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Finding the Fourth Proportional to 425,368.90, 637,832.62 and 125,810.11

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Solution

The fourth proportional to 425,368.90, 637,832.62 and 125,810.11 is: 188,649.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,368.90 : 637,832.62 = 125,810.11 : x
  2. Step 2: Convert to fraction form
    425,368.90/637,832.62 = 125,810.11/x
  3. Step 3: Cross multiply
    425,368.90x = 637,832.62 × 125,810.11
  4. Step 4: Simplify right side
    425,368.90x = 80,245,792,083.79
  5. Step 5: Solve for x
    x = 80,245,792,083.79/425,368.90
  6. Step 6: Final answer
    x = 188,649.88

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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.