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Finding the Fourth Proportional to 401,869.72, 553,988.10 and 306,210.52

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Solution

The fourth proportional to 401,869.72, 553,988.10 and 306,210.52 is: 422,119.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,869.72 : 553,988.10 = 306,210.52 : x
  2. Step 2: Convert to fraction form
    401,869.72/553,988.10 = 306,210.52/x
  3. Step 3: Cross multiply
    401,869.72x = 553,988.10 × 306,210.52
  4. Step 4: Simplify right side
    401,869.72x = 169,636,984,174.81
  5. Step 5: Solve for x
    x = 169,636,984,174.81/401,869.72
  6. Step 6: Final answer
    x = 422,119.35

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