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Finding the Fourth Proportional to 289,651.13, 399,742.23 and 160,630.01

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Solution

The fourth proportional to 289,651.13, 399,742.23 and 160,630.01 is: 221,682.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,651.13 : 399,742.23 = 160,630.01 : x
  2. Step 2: Convert to fraction form
    289,651.13/399,742.23 = 160,630.01/x
  3. Step 3: Cross multiply
    289,651.13x = 399,742.23 × 160,630.01
  4. Step 4: Simplify right side
    289,651.13x = 64,210,600,004.04
  5. Step 5: Solve for x
    x = 64,210,600,004.04/289,651.13
  6. Step 6: Final answer
    x = 221,682.54

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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.