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Finding the Fourth Proportional to 401,043, 553,439.34 and 239,904.84

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Solution

The fourth proportional to 401,043, 553,439.34 and 239,904.84 is: 331,068.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,043 : 553,439.34 = 239,904.84 : x
  2. Step 2: Convert to fraction form
    401,043/553,439.34 = 239,904.84/x
  3. Step 3: Cross multiply
    401,043x = 553,439.34 × 239,904.84
  4. Step 4: Simplify right side
    401,043x = 132,772,776,312.41
  5. Step 5: Solve for x
    x = 132,772,776,312.41/401,043
  6. Step 6: Final answer
    x = 331,068.68

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.