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Finding the Fourth Proportional to 342,515.03, 472,671.64 and 189,563.77

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Solution

The fourth proportional to 342,515.03, 472,671.64 and 189,563.77 is: 261,598.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,515.03 : 472,671.64 = 189,563.77 : x
  2. Step 2: Convert to fraction form
    342,515.03/472,671.64 = 189,563.77/x
  3. Step 3: Cross multiply
    342,515.03x = 472,671.64 × 189,563.77
  4. Step 4: Simplify right side
    342,515.03x = 89,601,417,282.31
  5. Step 5: Solve for x
    x = 89,601,417,282.31/342,515.03
  6. Step 6: Final answer
    x = 261,598.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.