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Finding the Fourth Proportional to 284,809.35, 393,035.87 and 160,620.45

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Solution

The fourth proportional to 284,809.35, 393,035.87 and 160,620.45 is: 221,655.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,809.35 : 393,035.87 = 160,620.45 : x
  2. Step 2: Convert to fraction form
    284,809.35/393,035.87 = 160,620.45/x
  3. Step 3: Cross multiply
    284,809.35x = 393,035.87 × 160,620.45
  4. Step 4: Simplify right side
    284,809.35x = 63,129,597,903.99
  5. Step 5: Solve for x
    x = 63,129,597,903.99/284,809.35
  6. Step 6: Final answer
    x = 221,655.64

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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.