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Finding the Fourth Proportional to 152,028.70, 228,043.05 and 128,409.10

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Solution

The fourth proportional to 152,028.70, 228,043.05 and 128,409.10 is: 192,613.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,028.70 : 228,043.05 = 128,409.10 : x
  2. Step 2: Convert to fraction form
    152,028.70/228,043.05 = 128,409.10/x
  3. Step 3: Cross multiply
    152,028.70x = 228,043.05 × 128,409.10
  4. Step 4: Simplify right side
    152,028.70x = 29,282,802,811.76
  5. Step 5: Solve for x
    x = 29,282,802,811.76/152,028.70
  6. Step 6: Final answer
    x = 192,613.65

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Similar ratio
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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.