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Finding the Fourth Proportional to 294,008.40, 405,720.36 and 159,872.40

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Solution

The fourth proportional to 294,008.40, 405,720.36 and 159,872.40 is: 220,617.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,008.40 : 405,720.36 = 159,872.40 : x
  2. Step 2: Convert to fraction form
    294,008.40/405,720.36 = 159,872.40/x
  3. Step 3: Cross multiply
    294,008.40x = 405,720.36 × 159,872.40
  4. Step 4: Simplify right side
    294,008.40x = 64,863,487,682.06
  5. Step 5: Solve for x
    x = 64,863,487,682.06/294,008.40
  6. Step 6: Final answer
    x = 220,617.80

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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.