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Finding the Fourth Proportional to 362,408.60, 543,612.90 and 306,421.40

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Solution

The fourth proportional to 362,408.60, 543,612.90 and 306,421.40 is: 459,632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,408.60 : 543,612.90 = 306,421.40 : x
  2. Step 2: Convert to fraction form
    362,408.60/543,612.90 = 306,421.40/x
  3. Step 3: Cross multiply
    362,408.60x = 543,612.90 × 306,421.40
  4. Step 4: Simplify right side
    362,408.60x = 166,574,625,876.06
  5. Step 5: Solve for x
    x = 166,574,625,876.06/362,408.60
  6. Step 6: Final answer
    x = 459,632.10

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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.