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Finding the Fourth Proportional to 279,039.26, 384,390.81 and 202,332.93

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Solution

The fourth proportional to 279,039.26, 384,390.81 and 202,332.93 is: 278,723.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,039.26 : 384,390.81 = 202,332.93 : x
  2. Step 2: Convert to fraction form
    279,039.26/384,390.81 = 202,332.93/x
  3. Step 3: Cross multiply
    279,039.26x = 384,390.81 × 202,332.93
  4. Step 4: Simplify right side
    279,039.26x = 77,774,918,852.37
  5. Step 5: Solve for x
    x = 77,774,918,852.37/279,039.26
  6. Step 6: Final answer
    x = 278,723.93

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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.