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Finding the Fourth Proportional to 287,559.60, 430,950.60 and 254,122.80

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Solution

The fourth proportional to 287,559.60, 430,950.60 and 254,122.80 is: 380,840.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,559.60 : 430,950.60 = 254,122.80 : x
  2. Step 2: Convert to fraction form
    287,559.60/430,950.60 = 254,122.80/x
  3. Step 3: Cross multiply
    287,559.60x = 430,950.60 × 254,122.80
  4. Step 4: Simplify right side
    287,559.60x = 109,514,373,133.68
  5. Step 5: Solve for x
    x = 109,514,373,133.68/287,559.60
  6. Step 6: Final answer
    x = 380,840.61

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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.