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Finding the Fourth Proportional to 213,791.94, 320,798.56 and 155,111.94

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Solution

The fourth proportional to 213,791.94, 320,798.56 and 155,111.94 is: 232,748.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,791.94 : 320,798.56 = 155,111.94 : x
  2. Step 2: Convert to fraction form
    213,791.94/320,798.56 = 155,111.94/x
  3. Step 3: Cross multiply
    213,791.94x = 320,798.56 × 155,111.94
  4. Step 4: Simplify right side
    213,791.94x = 49,759,686,990.81
  5. Step 5: Solve for x
    x = 49,759,686,990.81/213,791.94
  6. Step 6: Final answer
    x = 232,748.19

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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.