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Finding the Fourth Proportional to 211,847.58, 317,767.23 and 85,484.46

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Solution

The fourth proportional to 211,847.58, 317,767.23 and 85,484.46 is: 128,225.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,847.58 : 317,767.23 = 85,484.46 : x
  2. Step 2: Convert to fraction form
    211,847.58/317,767.23 = 85,484.46/x
  3. Step 3: Cross multiply
    211,847.58x = 317,767.23 × 85,484.46
  4. Step 4: Simplify right side
    211,847.58x = 27,164,160,062.25
  5. Step 5: Solve for x
    x = 27,164,160,062.25/211,847.58
  6. Step 6: Final answer
    x = 128,225.02

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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.