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Finding the Fourth Proportional to 289,392.96, 399,315.84 and 162,073.92

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Solution

The fourth proportional to 289,392.96, 399,315.84 and 162,073.92 is: 223,636.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,392.96 : 399,315.84 = 162,073.92 : x
  2. Step 2: Convert to fraction form
    289,392.96/399,315.84 = 162,073.92/x
  3. Step 3: Cross multiply
    289,392.96x = 399,315.84 × 162,073.92
  4. Step 4: Simplify right side
    289,392.96x = 64,718,683,506.89
  5. Step 5: Solve for x
    x = 64,718,683,506.89/289,392.96
  6. Step 6: Final answer
    x = 223,636.00

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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.