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Finding the Fourth Proportional to 354,301, 489,810.18 and 339,429.40

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Solution

The fourth proportional to 354,301, 489,810.18 and 339,429.40 is: 469,250.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,301 : 489,810.18 = 339,429.40 : x
  2. Step 2: Convert to fraction form
    354,301/489,810.18 = 339,429.40/x
  3. Step 3: Cross multiply
    354,301x = 489,810.18 × 339,429.40
  4. Step 4: Simplify right side
    354,301x = 166,255,975,511.29
  5. Step 5: Solve for x
    x = 166,255,975,511.29/354,301
  6. Step 6: Final answer
    x = 469,250.65

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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.