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Finding the Fourth Proportional to 354,561.84, 489,379.32 and 203,746.32

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Solution

The fourth proportional to 354,561.84, 489,379.32 and 203,746.32 is: 281,218.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,561.84 : 489,379.32 = 203,746.32 : x
  2. Step 2: Convert to fraction form
    354,561.84/489,379.32 = 203,746.32/x
  3. Step 3: Cross multiply
    354,561.84x = 489,379.32 × 203,746.32
  4. Step 4: Simplify right side
    354,561.84x = 99,709,235,534.10
  5. Step 5: Solve for x
    x = 99,709,235,534.10/354,561.84
  6. Step 6: Final answer
    x = 281,218.18

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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.