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Finding the Fourth Proportional to 210,320.60, 315,480.90 and 163,081.40

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Solution

The fourth proportional to 210,320.60, 315,480.90 and 163,081.40 is: 244,622.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,320.60 : 315,480.90 = 163,081.40 : x
  2. Step 2: Convert to fraction form
    210,320.60/315,480.90 = 163,081.40/x
  3. Step 3: Cross multiply
    210,320.60x = 315,480.90 × 163,081.40
  4. Step 4: Simplify right side
    210,320.60x = 51,449,066,845.26
  5. Step 5: Solve for x
    x = 51,449,066,845.26/210,320.60
  6. Step 6: Final answer
    x = 244,622.10

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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.