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Finding the Fourth Proportional to 207,518.27, 286,395.59 and 121,472.07

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Solution

The fourth proportional to 207,518.27, 286,395.59 and 121,472.07 is: 167,643.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,518.27 : 286,395.59 = 121,472.07 : x
  2. Step 2: Convert to fraction form
    207,518.27/286,395.59 = 121,472.07/x
  3. Step 3: Cross multiply
    207,518.27x = 286,395.59 × 121,472.07
  4. Step 4: Simplify right side
    207,518.27x = 34,789,065,850.55
  5. Step 5: Solve for x
    x = 34,789,065,850.55/207,518.27
  6. Step 6: Final answer
    x = 167,643.39

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1.5x scale

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.