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Finding the Fourth Proportional to 289,670.34, 399,744.54 and 162,345.90

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Solution

The fourth proportional to 289,670.34, 399,744.54 and 162,345.90 is: 224,037.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,670.34 : 399,744.54 = 162,345.90 : x
  2. Step 2: Convert to fraction form
    289,670.34/399,744.54 = 162,345.90/x
  3. Step 3: Cross multiply
    289,670.34x = 399,744.54 × 162,345.90
  4. Step 4: Simplify right side
    289,670.34x = 64,896,887,116.39
  5. Step 5: Solve for x
    x = 64,896,887,116.39/289,670.34
  6. Step 6: Final answer
    x = 224,037.05

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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.