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Finding the Fourth Proportional to 306,117.70, 459,249.45 and 128,533.30

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Solution

The fourth proportional to 306,117.70, 459,249.45 and 128,533.30 is: 192,830.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,117.70 : 459,249.45 = 128,533.30 : x
  2. Step 2: Convert to fraction form
    306,117.70/459,249.45 = 128,533.30/x
  3. Step 3: Cross multiply
    306,117.70x = 459,249.45 × 128,533.30
  4. Step 4: Simplify right side
    306,117.70x = 59,028,847,331.69
  5. Step 5: Solve for x
    x = 59,028,847,331.69/306,117.70
  6. Step 6: Final answer
    x = 192,830.56

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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.