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Finding the Fourth Proportional to 284,133.60, 425,984.40 and 143,992.80

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Solution

The fourth proportional to 284,133.60, 425,984.40 and 143,992.80 is: 215,879.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,133.60 : 425,984.40 = 143,992.80 : x
  2. Step 2: Convert to fraction form
    284,133.60/425,984.40 = 143,992.80/x
  3. Step 3: Cross multiply
    284,133.60x = 425,984.40 × 143,992.80
  4. Step 4: Simplify right side
    284,133.60x = 61,338,686,512.32
  5. Step 5: Solve for x
    x = 61,338,686,512.32/284,133.60
  6. Step 6: Final answer
    x = 215,879.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.