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Finding the Fourth Proportional to 289,448.71, 399,439.22 and 176,271.46

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Solution

The fourth proportional to 289,448.71, 399,439.22 and 176,271.46 is: 243,254.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,448.71 : 399,439.22 = 176,271.46 : x
  2. Step 2: Convert to fraction form
    289,448.71/399,439.22 = 176,271.46/x
  3. Step 3: Cross multiply
    289,448.71x = 399,439.22 × 176,271.46
  4. Step 4: Simplify right side
    289,448.71x = 70,409,733,609.30
  5. Step 5: Solve for x
    x = 70,409,733,609.30/289,448.71
  6. Step 6: Final answer
    x = 243,254.61

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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.