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Finding the Fourth Proportional to 553,727.43, 830,631.85 and 198,744.53

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Solution

The fourth proportional to 553,727.43, 830,631.85 and 198,744.53 is: 298,131.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,727.43 : 830,631.85 = 198,744.53 : x
  2. Step 2: Convert to fraction form
    553,727.43/830,631.85 = 198,744.53/x
  3. Step 3: Cross multiply
    553,727.43x = 830,631.85 × 198,744.53
  4. Step 4: Simplify right side
    553,727.43x = 165,083,531,981.26
  5. Step 5: Solve for x
    x = 165,083,531,981.26/553,727.43
  6. Step 6: Final answer
    x = 298,131.40

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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.