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Finding the Fourth Proportional to 553,786.40, 831,068.40 and 238,469.60

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Solution

The fourth proportional to 553,786.40, 831,068.40 and 238,469.60 is: 357,871.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,786.40 : 831,068.40 = 238,469.60 : x
  2. Step 2: Convert to fraction form
    553,786.40/831,068.40 = 238,469.60/x
  3. Step 3: Cross multiply
    553,786.40x = 831,068.40 × 238,469.60
  4. Step 4: Simplify right side
    553,786.40x = 198,184,548,920.64
  5. Step 5: Solve for x
    x = 198,184,548,920.64/553,786.40
  6. Step 6: Final answer
    x = 357,871.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.