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Finding the Fourth Proportional to 318,299.57, 476,808.30 and 147,280.28

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Solution

The fourth proportional to 318,299.57, 476,808.30 and 147,280.28 is: 220,623.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,299.57 : 476,808.30 = 147,280.28 : x
  2. Step 2: Convert to fraction form
    318,299.57/476,808.30 = 147,280.28/x
  3. Step 3: Cross multiply
    318,299.57x = 476,808.30 × 147,280.28
  4. Step 4: Simplify right side
    318,299.57x = 70,224,457,132.06
  5. Step 5: Solve for x
    x = 70,224,457,132.06/318,299.57
  6. Step 6: Final answer
    x = 220,623.79

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1.5x scale

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.