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Finding the Fourth Proportional to 423,083.48, 634,625.46 and 209,998.61

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Solution

The fourth proportional to 423,083.48, 634,625.46 and 209,998.61 is: 314,998.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,083.48 : 634,625.46 = 209,998.61 : x
  2. Step 2: Convert to fraction form
    423,083.48/634,625.46 = 209,998.61/x
  3. Step 3: Cross multiply
    423,083.48x = 634,625.46 × 209,998.61
  4. Step 4: Simplify right side
    423,083.48x = 133,270,461,297.48
  5. Step 5: Solve for x
    x = 133,270,461,297.48/423,083.48
  6. Step 6: Final answer
    x = 314,998.02

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1.5x scale

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.