Home / 306,008.15-459,011.61-81,368.62

Finding the Fourth Proportional to 306,008.15, 459,011.61 and 81,368.62

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Solution

The fourth proportional to 306,008.15, 459,011.61 and 81,368.62 is: 122,052.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,008.15 : 459,011.61 = 81,368.62 : x
  2. Step 2: Convert to fraction form
    306,008.15/459,011.61 = 81,368.62/x
  3. Step 3: Cross multiply
    306,008.15x = 459,011.61 × 81,368.62
  4. Step 4: Simplify right side
    306,008.15x = 37,349,140,122.15
  5. Step 5: Solve for x
    x = 37,349,140,122.15/306,008.15
  6. Step 6: Final answer
    x = 122,052.76

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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.