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Finding the Fourth Proportional to 210,877.60, 315,855.60 and 163,760.80

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Solution

The fourth proportional to 210,877.60, 315,855.60 and 163,760.80 is: 245,283.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,877.60 : 315,855.60 = 163,760.80 : x
  2. Step 2: Convert to fraction form
    210,877.60/315,855.60 = 163,760.80/x
  3. Step 3: Cross multiply
    210,877.60x = 315,855.60 × 163,760.80
  4. Step 4: Simplify right side
    210,877.60x = 51,724,765,740.48
  5. Step 5: Solve for x
    x = 51,724,765,740.48/210,877.60
  6. Step 6: Final answer
    x = 245,283.36

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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.