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Finding the Fourth Proportional to 354,356.42, 489,053.34 and 201,417.57

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Solution

The fourth proportional to 354,356.42, 489,053.34 and 201,417.57 is: 277,979.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,356.42 : 489,053.34 = 201,417.57 : x
  2. Step 2: Convert to fraction form
    354,356.42/489,053.34 = 201,417.57/x
  3. Step 3: Cross multiply
    354,356.42x = 489,053.34 × 201,417.57
  4. Step 4: Simplify right side
    354,356.42x = 98,503,935,343.18
  5. Step 5: Solve for x
    x = 98,503,935,343.18/354,356.42
  6. Step 6: Final answer
    x = 277,979.83

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1.5x scale

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.