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Finding the Fourth Proportional to 210,425.04, 315,640.44 and 70,183.80

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Solution

The fourth proportional to 210,425.04, 315,640.44 and 70,183.80 is: 105,276.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,425.04 : 315,640.44 = 70,183.80 : x
  2. Step 2: Convert to fraction form
    210,425.04/315,640.44 = 70,183.80/x
  3. Step 3: Cross multiply
    210,425.04x = 315,640.44 × 70,183.80
  4. Step 4: Simplify right side
    210,425.04x = 22,152,845,512.87
  5. Step 5: Solve for x
    x = 22,152,845,512.87/210,425.04
  6. Step 6: Final answer
    x = 105,276.66

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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.