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Finding the Fourth Proportional to 306,040.90, 459,061.35 and 216,811.30

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Solution

The fourth proportional to 306,040.90, 459,061.35 and 216,811.30 is: 325,216.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,040.90 : 459,061.35 = 216,811.30 : x
  2. Step 2: Convert to fraction form
    306,040.90/459,061.35 = 216,811.30/x
  3. Step 3: Cross multiply
    306,040.90x = 459,061.35 × 216,811.30
  4. Step 4: Simplify right side
    306,040.90x = 99,529,688,073.26
  5. Step 5: Solve for x
    x = 99,529,688,073.26/306,040.90
  6. Step 6: Final answer
    x = 325,216.95

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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.