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Finding the Fourth Proportional to 313,966.96, 470,966.80 and 103,621.30

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Solution

The fourth proportional to 313,966.96, 470,966.80 and 103,621.30 is: 155,437.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,966.96 : 470,966.80 = 103,621.30 : x
  2. Step 2: Convert to fraction form
    313,966.96/470,966.80 = 103,621.30/x
  3. Step 3: Cross multiply
    313,966.96x = 470,966.80 × 103,621.30
  4. Step 4: Simplify right side
    313,966.96x = 48,802,192,072.84
  5. Step 5: Solve for x
    x = 48,802,192,072.84/313,966.96
  6. Step 6: Final answer
    x = 155,437.35

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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.