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Finding the Fourth Proportional to 449,426.18, 620,207.11 and 258,439.59

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Solution

The fourth proportional to 449,426.18, 620,207.11 and 258,439.59 is: 356,646.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,426.18 : 620,207.11 = 258,439.59 : x
  2. Step 2: Convert to fraction form
    449,426.18/620,207.11 = 258,439.59/x
  3. Step 3: Cross multiply
    449,426.18x = 620,207.11 × 258,439.59
  4. Step 4: Simplify right side
    449,426.18x = 160,286,071,223.49
  5. Step 5: Solve for x
    x = 160,286,071,223.49/449,426.18
  6. Step 6: Final answer
    x = 356,646.05

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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.