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Finding the Fourth Proportional to 210,683.60, 316,025.40 and 131,886.80

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Solution

The fourth proportional to 210,683.60, 316,025.40 and 131,886.80 is: 197,830.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,683.60 : 316,025.40 = 131,886.80 : x
  2. Step 2: Convert to fraction form
    210,683.60/316,025.40 = 131,886.80/x
  3. Step 3: Cross multiply
    210,683.60x = 316,025.40 × 131,886.80
  4. Step 4: Simplify right side
    210,683.60x = 41,679,578,724.72
  5. Step 5: Solve for x
    x = 41,679,578,724.72/210,683.60
  6. Step 6: Final answer
    x = 197,830.20

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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.