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Finding the Fourth Proportional to 211,903.54, 317,820.37 and 69,750.67

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Solution

The fourth proportional to 211,903.54, 317,820.37 and 69,750.67 is: 104,614.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,903.54 : 317,820.37 = 69,750.67 : x
  2. Step 2: Convert to fraction form
    211,903.54/317,820.37 = 69,750.67/x
  3. Step 3: Cross multiply
    211,903.54x = 317,820.37 × 69,750.67
  4. Step 4: Simplify right side
    211,903.54x = 22,168,181,809.29
  5. Step 5: Solve for x
    x = 22,168,181,809.29/211,903.54
  6. Step 6: Final answer
    x = 104,614.50

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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.