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Finding the Fourth Proportional to 213,792.93, 320,800.05 and 155,112.93

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Solution

The fourth proportional to 213,792.93, 320,800.05 and 155,112.93 is: 232,749.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,792.93 : 320,800.05 = 155,112.93 : x
  2. Step 2: Convert to fraction form
    213,792.93/320,800.05 = 155,112.93/x
  3. Step 3: Cross multiply
    213,792.93x = 320,800.05 × 155,112.93
  4. Step 4: Simplify right side
    213,792.93x = 49,760,235,699.65
  5. Step 5: Solve for x
    x = 49,760,235,699.65/213,792.93
  6. Step 6: Final answer
    x = 232,749.68

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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.