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Finding the Fourth Proportional to 388,861.20, 582,125.40 and 365,792.40

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Solution

The fourth proportional to 388,861.20, 582,125.40 and 365,792.40 is: 547,591.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,861.20 : 582,125.40 = 365,792.40 : x
  2. Step 2: Convert to fraction form
    388,861.20/582,125.40 = 365,792.40/x
  3. Step 3: Cross multiply
    388,861.20x = 582,125.40 × 365,792.40
  4. Step 4: Simplify right side
    388,861.20x = 212,937,047,166.96
  5. Step 5: Solve for x
    x = 212,937,047,166.96/388,861.20
  6. Step 6: Final answer
    x = 547,591.40

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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.