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Finding the Fourth Proportional to 313,220.60, 432,244.72 and 169,980.66

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Solution

The fourth proportional to 313,220.60, 432,244.72 and 169,980.66 is: 234,573.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,220.60 : 432,244.72 = 169,980.66 : x
  2. Step 2: Convert to fraction form
    313,220.60/432,244.72 = 169,980.66/x
  3. Step 3: Cross multiply
    313,220.60x = 432,244.72 × 169,980.66
  4. Step 4: Simplify right side
    313,220.60x = 73,473,242,787.12
  5. Step 5: Solve for x
    x = 73,473,242,787.12/313,220.60
  6. Step 6: Final answer
    x = 234,573.47

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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.