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Finding the Fourth Proportional to 342,162.60, 472,159.12 and 189,202.81

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Solution

The fourth proportional to 342,162.60, 472,159.12 and 189,202.81 is: 261,085.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,162.60 : 472,159.12 = 189,202.81 : x
  2. Step 2: Convert to fraction form
    342,162.60/472,159.12 = 189,202.81/x
  3. Step 3: Cross multiply
    342,162.60x = 472,159.12 × 189,202.81
  4. Step 4: Simplify right side
    342,162.60x = 89,333,832,271.13
  5. Step 5: Solve for x
    x = 89,333,832,271.13/342,162.60
  6. Step 6: Final answer
    x = 261,085.91

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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.