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Finding the Fourth Proportional to 392,810.77, 542,036.77 and 263,723.10

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Solution

The fourth proportional to 392,810.77, 542,036.77 and 263,723.10 is: 363,909.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,810.77 : 542,036.77 = 263,723.10 : x
  2. Step 2: Convert to fraction form
    392,810.77/542,036.77 = 263,723.10/x
  3. Step 3: Cross multiply
    392,810.77x = 542,036.77 × 263,723.10
  4. Step 4: Simplify right side
    392,810.77x = 142,947,617,298.39
  5. Step 5: Solve for x
    x = 142,947,617,298.39/392,810.77
  6. Step 6: Final answer
    x = 363,909.62

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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.