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Finding the Fourth Proportional to 313,048.80, 432,007.56 and 169,808.40

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Solution

The fourth proportional to 313,048.80, 432,007.56 and 169,808.40 is: 234,335.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,048.80 : 432,007.56 = 169,808.40 : x
  2. Step 2: Convert to fraction form
    313,048.80/432,007.56 = 169,808.40/x
  3. Step 3: Cross multiply
    313,048.80x = 432,007.56 × 169,808.40
  4. Step 4: Simplify right side
    313,048.80x = 73,358,512,551.50
  5. Step 5: Solve for x
    x = 73,358,512,551.50/313,048.80
  6. Step 6: Final answer
    x = 234,335.71

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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.