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Finding the Fourth Proportional to 663,130.56, 994,671.52 and 189,815.20

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Solution

The fourth proportional to 663,130.56, 994,671.52 and 189,815.20 is: 284,715.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,130.56 : 994,671.52 = 189,815.20 : x
  2. Step 2: Convert to fraction form
    663,130.56/994,671.52 = 189,815.20/x
  3. Step 3: Cross multiply
    663,130.56x = 994,671.52 × 189,815.20
  4. Step 4: Simplify right side
    663,130.56x = 188,803,773,503.10
  5. Step 5: Solve for x
    x = 188,803,773,503.10/663,130.56
  6. Step 6: Final answer
    x = 284,715.84

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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.