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Finding the Fourth Proportional to 377,730.60, 566,595.90 and 128,412.60

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Solution

The fourth proportional to 377,730.60, 566,595.90 and 128,412.60 is: 192,618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,730.60 : 566,595.90 = 128,412.60 : x
  2. Step 2: Convert to fraction form
    377,730.60/566,595.90 = 128,412.60/x
  3. Step 3: Cross multiply
    377,730.60x = 566,595.90 × 128,412.60
  4. Step 4: Simplify right side
    377,730.60x = 72,758,052,668.34
  5. Step 5: Solve for x
    x = 72,758,052,668.34/377,730.60
  6. Step 6: Final answer
    x = 192,618.90

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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.