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Finding the Fourth Proportional to 289,591.02, 399,638.25 and 160,530.88

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Solution

The fourth proportional to 289,591.02, 399,638.25 and 160,530.88 is: 221,534.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,591.02 : 399,638.25 = 160,530.88 : x
  2. Step 2: Convert to fraction form
    289,591.02/399,638.25 = 160,530.88/x
  3. Step 3: Cross multiply
    289,591.02x = 399,638.25 × 160,530.88
  4. Step 4: Simplify right side
    289,591.02x = 64,154,279,954.16
  5. Step 5: Solve for x
    x = 64,154,279,954.16/289,591.02
  6. Step 6: Final answer
    x = 221,534.08

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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.