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Finding the Fourth Proportional to 401,078.77, 553,436.08 and 239,875.00

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Solution

The fourth proportional to 401,078.77, 553,436.08 and 239,875.00 is: 330,996.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,078.77 : 553,436.08 = 239,875.00 : x
  2. Step 2: Convert to fraction form
    401,078.77/553,436.08 = 239,875.00/x
  3. Step 3: Cross multiply
    401,078.77x = 553,436.08 × 239,875.00
  4. Step 4: Simplify right side
    401,078.77x = 132,755,477,706.72
  5. Step 5: Solve for x
    x = 132,755,477,706.72/401,078.77
  6. Step 6: Final answer
    x = 330,996.02

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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.