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Finding the Fourth Proportional to 306,041.14, 459,025.14 and 81,418

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Solution

The fourth proportional to 306,041.14, 459,025.14 and 81,418 is: 122,117.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,041.14 : 459,025.14 = 81,418 : x
  2. Step 2: Convert to fraction form
    306,041.14/459,025.14 = 81,418/x
  3. Step 3: Cross multiply
    306,041.14x = 459,025.14 × 81,418
  4. Step 4: Simplify right side
    306,041.14x = 37,372,908,848.52
  5. Step 5: Solve for x
    x = 37,372,908,848.52/306,041.14
  6. Step 6: Final answer
    x = 122,117.27

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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.