Home / 211,780.04-317,700.70-71,578.76

Finding the Fourth Proportional to 211,780.04, 317,700.70 and 71,578.76

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Solution

The fourth proportional to 211,780.04, 317,700.70 and 71,578.76 is: 107,378.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,780.04 : 317,700.70 = 71,578.76 : x
  2. Step 2: Convert to fraction form
    211,780.04/317,700.70 = 71,578.76/x
  3. Step 3: Cross multiply
    211,780.04x = 317,700.70 × 71,578.76
  4. Step 4: Simplify right side
    211,780.04x = 22,740,622,157.13
  5. Step 5: Solve for x
    x = 22,740,622,157.13/211,780.04
  6. Step 6: Final answer
    x = 107,378.50

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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.