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Finding the Fourth Proportional to 401,326.66, 553,809.62 and 229,210.79

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Solution

The fourth proportional to 401,326.66, 553,809.62 and 229,210.79 is: 316,298.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,326.66 : 553,809.62 = 229,210.79 : x
  2. Step 2: Convert to fraction form
    401,326.66/553,809.62 = 229,210.79/x
  3. Step 3: Cross multiply
    401,326.66x = 553,809.62 × 229,210.79
  4. Step 4: Simplify right side
    401,326.66x = 126,939,138,313.78
  5. Step 5: Solve for x
    x = 126,939,138,313.78/401,326.66
  6. Step 6: Final answer
    x = 316,298.80

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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.