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Finding the Fourth Proportional to 306,640.16, 459,958.08 and 85,024.16

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Solution

The fourth proportional to 306,640.16, 459,958.08 and 85,024.16 is: 127,535.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,640.16 : 459,958.08 = 85,024.16 : x
  2. Step 2: Convert to fraction form
    306,640.16/459,958.08 = 85,024.16/x
  3. Step 3: Cross multiply
    306,640.16x = 459,958.08 × 85,024.16
  4. Step 4: Simplify right side
    306,640.16x = 39,107,549,387.21
  5. Step 5: Solve for x
    x = 39,107,549,387.21/306,640.16
  6. Step 6: Final answer
    x = 127,535.64

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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.