Home / 257,154.15-354,914.78-153,781.59

Finding the Fourth Proportional to 257,154.15, 354,914.78 and 153,781.59

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Solution

The fourth proportional to 257,154.15, 354,914.78 and 153,781.59 is: 212,243.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,154.15 : 354,914.78 = 153,781.59 : x
  2. Step 2: Convert to fraction form
    257,154.15/354,914.78 = 153,781.59/x
  3. Step 3: Cross multiply
    257,154.15x = 354,914.78 × 153,781.59
  4. Step 4: Simplify right side
    257,154.15x = 54,579,358,413.99
  5. Step 5: Solve for x
    x = 54,579,358,413.99/257,154.15
  6. Step 6: Final answer
    x = 212,243.74

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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.