Home / 306,220.18-459,228.06-128,694.10

Finding the Fourth Proportional to 306,220.18, 459,228.06 and 128,694.10

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Solution

The fourth proportional to 306,220.18, 459,228.06 and 128,694.10 is: 192,998.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,220.18 : 459,228.06 = 128,694.10 : x
  2. Step 2: Convert to fraction form
    306,220.18/459,228.06 = 128,694.10/x
  3. Step 3: Cross multiply
    306,220.18x = 459,228.06 × 128,694.10
  4. Step 4: Simplify right side
    306,220.18x = 59,099,941,876.45
  5. Step 5: Solve for x
    x = 59,099,941,876.45/306,220.18
  6. Step 6: Final answer
    x = 192,998.19

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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.