Home / 354,936.07-489,854.73-202,011.45

Finding the Fourth Proportional to 354,936.07, 489,854.73 and 202,011.45

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Solution

The fourth proportional to 354,936.07, 489,854.73 and 202,011.45 is: 278,800.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,936.07 : 489,854.73 = 202,011.45 : x
  2. Step 2: Convert to fraction form
    354,936.07/489,854.73 = 202,011.45/x
  3. Step 3: Cross multiply
    354,936.07x = 489,854.73 × 202,011.45
  4. Step 4: Simplify right side
    354,936.07x = 98,956,264,296.66
  5. Step 5: Solve for x
    x = 98,956,264,296.66/354,936.07
  6. Step 6: Final answer
    x = 278,800.25

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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.