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Finding the Fourth Proportional to 449,488.89, 620,294.64 and 258,498.18

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Solution

The fourth proportional to 449,488.89, 620,294.64 and 258,498.18 is: 356,727.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,488.89 : 620,294.64 = 258,498.18 : x
  2. Step 2: Convert to fraction form
    449,488.89/620,294.64 = 258,498.18/x
  3. Step 3: Cross multiply
    449,488.89x = 620,294.64 × 258,498.18
  4. Step 4: Simplify right side
    449,488.89x = 160,345,035,503.76
  5. Step 5: Solve for x
    x = 160,345,035,503.76/449,488.89
  6. Step 6: Final answer
    x = 356,727.47

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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.