Home / 306,515.10-459,772.65-221,878.20

Finding the Fourth Proportional to 306,515.10, 459,772.65 and 221,878.20

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Solution

The fourth proportional to 306,515.10, 459,772.65 and 221,878.20 is: 332,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,515.10 : 459,772.65 = 221,878.20 : x
  2. Step 2: Convert to fraction form
    306,515.10/459,772.65 = 221,878.20/x
  3. Step 3: Cross multiply
    306,515.10x = 459,772.65 × 221,878.20
  4. Step 4: Simplify right side
    306,515.10x = 102,013,527,991.23
  5. Step 5: Solve for x
    x = 102,013,527,991.23/306,515.10
  6. Step 6: Final answer
    x = 332,817.30

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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.