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Finding the Fourth Proportional to 516,955.16, 713,391.81 and 290,600.66

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Solution

The fourth proportional to 516,955.16, 713,391.81 and 290,600.66 is: 401,025.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,955.16 : 713,391.81 = 290,600.66 : x
  2. Step 2: Convert to fraction form
    516,955.16/713,391.81 = 290,600.66/x
  3. Step 3: Cross multiply
    516,955.16x = 713,391.81 × 290,600.66
  4. Step 4: Simplify right side
    516,955.16x = 207,312,131,518.32
  5. Step 5: Solve for x
    x = 207,312,131,518.32/516,955.16
  6. Step 6: Final answer
    x = 401,025.36

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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.