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Finding the Fourth Proportional to 272,817.60, 409,226.40 and 139,957.35

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Solution

The fourth proportional to 272,817.60, 409,226.40 and 139,957.35 is: 209,936.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,817.60 : 409,226.40 = 139,957.35 : x
  2. Step 2: Convert to fraction form
    272,817.60/409,226.40 = 139,957.35/x
  3. Step 3: Cross multiply
    272,817.60x = 409,226.40 × 139,957.35
  4. Step 4: Simplify right side
    272,817.60x = 57,274,242,494.04
  5. Step 5: Solve for x
    x = 57,274,242,494.04/272,817.60
  6. Step 6: Final answer
    x = 209,936.03

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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.