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Finding the Fourth Proportional to 210,875.60, 316,313.40 and 132,078.80

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Solution

The fourth proportional to 210,875.60, 316,313.40 and 132,078.80 is: 198,118.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,875.60 : 316,313.40 = 132,078.80 : x
  2. Step 2: Convert to fraction form
    210,875.60/316,313.40 = 132,078.80/x
  3. Step 3: Cross multiply
    210,875.60x = 316,313.40 × 132,078.80
  4. Step 4: Simplify right side
    210,875.60x = 41,778,294,295.92
  5. Step 5: Solve for x
    x = 41,778,294,295.92/210,875.60
  6. Step 6: Final answer
    x = 198,118.20

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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.