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Finding the Fourth Proportional to 305,420.20, 459,114.45 and 217,284.10

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Solution

The fourth proportional to 305,420.20, 459,114.45 and 217,284.10 is: 326,626.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,420.20 : 459,114.45 = 217,284.10 : x
  2. Step 2: Convert to fraction form
    305,420.20/459,114.45 = 217,284.10/x
  3. Step 3: Cross multiply
    305,420.20x = 459,114.45 × 217,284.10
  4. Step 4: Simplify right side
    305,420.20x = 99,758,270,065.25
  5. Step 5: Solve for x
    x = 99,758,270,065.25/305,420.20
  6. Step 6: Final answer
    x = 326,626.30

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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.