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Finding the Fourth Proportional to 211,025.80, 316,538.70 and 70,750.60

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Solution

The fourth proportional to 211,025.80, 316,538.70 and 70,750.60 is: 106,125.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,025.80 : 316,538.70 = 70,750.60 : x
  2. Step 2: Convert to fraction form
    211,025.80/316,538.70 = 70,750.60/x
  3. Step 3: Cross multiply
    211,025.80x = 316,538.70 × 70,750.60
  4. Step 4: Simplify right side
    211,025.80x = 22,395,302,948.22
  5. Step 5: Solve for x
    x = 22,395,302,948.22/211,025.80
  6. Step 6: Final answer
    x = 106,125.90

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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.