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Finding the Fourth Proportional to 172,821.70, 259,232.55 and 162,980.20

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Solution

The fourth proportional to 172,821.70, 259,232.55 and 162,980.20 is: 244,470.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,821.70 : 259,232.55 = 162,980.20 : x
  2. Step 2: Convert to fraction form
    172,821.70/259,232.55 = 162,980.20/x
  3. Step 3: Cross multiply
    172,821.70x = 259,232.55 × 162,980.20
  4. Step 4: Simplify right side
    172,821.70x = 42,249,772,845.51
  5. Step 5: Solve for x
    x = 42,249,772,845.51/172,821.70
  6. Step 6: Final answer
    x = 244,470.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.