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Finding the Fourth Proportional to 353,533.48, 487,861.68 and 192,389.20

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Solution

The fourth proportional to 353,533.48, 487,861.68 and 192,389.20 is: 265,489.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,533.48 : 487,861.68 = 192,389.20 : x
  2. Step 2: Convert to fraction form
    353,533.48/487,861.68 = 192,389.20/x
  3. Step 3: Cross multiply
    353,533.48x = 487,861.68 × 192,389.20
  4. Step 4: Simplify right side
    353,533.48x = 93,859,318,325.86
  5. Step 5: Solve for x
    x = 93,859,318,325.86/353,533.48
  6. Step 6: Final answer
    x = 265,489.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.