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Finding the Fourth Proportional to 313,221.63, 432,246.15 and 169,981.71

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Solution

The fourth proportional to 313,221.63, 432,246.15 and 169,981.71 is: 234,574.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,221.63 : 432,246.15 = 169,981.71 : x
  2. Step 2: Convert to fraction form
    313,221.63/432,246.15 = 169,981.71/x
  3. Step 3: Cross multiply
    313,221.63x = 432,246.15 × 169,981.71
  4. Step 4: Simplify right side
    313,221.63x = 73,473,939,717.92
  5. Step 5: Solve for x
    x = 73,473,939,717.92/313,221.63
  6. Step 6: Final answer
    x = 234,574.92

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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.