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Finding the Fourth Proportional to 449,998.79, 621,154.59 and 259,088.27

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Solution

The fourth proportional to 449,998.79, 621,154.59 and 259,088.27 is: 357,631.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,998.79 : 621,154.59 = 259,088.27 : x
  2. Step 2: Convert to fraction form
    449,998.79/621,154.59 = 259,088.27/x
  3. Step 3: Cross multiply
    449,998.79x = 621,154.59 × 259,088.27
  4. Step 4: Simplify right side
    449,998.79x = 160,933,868,125.66
  5. Step 5: Solve for x
    x = 160,933,868,125.66/449,998.79
  6. Step 6: Final answer
    x = 357,631.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.