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Finding the Fourth Proportional to 354,639.59, 489,390.46 and 201,675.00

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Solution

The fourth proportional to 354,639.59, 489,390.46 and 201,675.00 is: 278,304.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,639.59 : 489,390.46 = 201,675.00 : x
  2. Step 2: Convert to fraction form
    354,639.59/489,390.46 = 201,675.00/x
  3. Step 3: Cross multiply
    354,639.59x = 489,390.46 × 201,675.00
  4. Step 4: Simplify right side
    354,639.59x = 98,697,821,663.32
  5. Step 5: Solve for x
    x = 98,697,821,663.32/354,639.59
  6. Step 6: Final answer
    x = 278,304.58

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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.