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Finding the Fourth Proportional to 211,081.60, 317,083.20 and 148,873.60

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Solution

The fourth proportional to 211,081.60, 317,083.20 and 148,873.60 is: 223,635.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,081.60 : 317,083.20 = 148,873.60 : x
  2. Step 2: Convert to fraction form
    211,081.60/317,083.20 = 148,873.60/x
  3. Step 3: Cross multiply
    211,081.60x = 317,083.20 × 148,873.60
  4. Step 4: Simplify right side
    211,081.60x = 47,205,317,483.52
  5. Step 5: Solve for x
    x = 47,205,317,483.52/211,081.60
  6. Step 6: Final answer
    x = 223,635.40

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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.