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Finding the Fourth Proportional to 354,720.14, 489,574.60 and 338,776.46

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Solution

The fourth proportional to 354,720.14, 489,574.60 and 338,776.46 is: 467,569.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,720.14 : 489,574.60 = 338,776.46 : x
  2. Step 2: Convert to fraction form
    354,720.14/489,574.60 = 338,776.46/x
  3. Step 3: Cross multiply
    354,720.14x = 489,574.60 × 338,776.46
  4. Step 4: Simplify right side
    354,720.14x = 165,856,349,893.92
  5. Step 5: Solve for x
    x = 165,856,349,893.92/354,720.14
  6. Step 6: Final answer
    x = 467,569.59

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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.