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Finding the Fourth Proportional to 314,020.80, 470,885.40 and 136,436.40

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Solution

The fourth proportional to 314,020.80, 470,885.40 and 136,436.40 is: 204,591.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,020.80 : 470,885.40 = 136,436.40 : x
  2. Step 2: Convert to fraction form
    314,020.80/470,885.40 = 136,436.40/x
  3. Step 3: Cross multiply
    314,020.80x = 470,885.40 × 136,436.40
  4. Step 4: Simplify right side
    314,020.80x = 64,245,908,788.56
  5. Step 5: Solve for x
    x = 64,245,908,788.56/314,020.80
  6. Step 6: Final answer
    x = 204,591.25

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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.