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Finding the Fourth Proportional to 438,379.80, 657,205.20 and 185,854.20

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Solution

The fourth proportional to 438,379.80, 657,205.20 and 185,854.20 is: 278,626.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,379.80 : 657,205.20 = 185,854.20 : x
  2. Step 2: Convert to fraction form
    438,379.80/657,205.20 = 185,854.20/x
  3. Step 3: Cross multiply
    438,379.80x = 657,205.20 × 185,854.20
  4. Step 4: Simplify right side
    438,379.80x = 122,144,346,681.84
  5. Step 5: Solve for x
    x = 122,144,346,681.84/438,379.80
  6. Step 6: Final answer
    x = 278,626.77

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