Home / 211,378.80-317,109.56-78,260.24

Finding the Fourth Proportional to 211,378.80, 317,109.56 and 78,260.24

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Solution

The fourth proportional to 211,378.80, 317,109.56 and 78,260.24 is: 117,405.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,378.80 : 317,109.56 = 78,260.24 : x
  2. Step 2: Convert to fraction form
    211,378.80/317,109.56 = 78,260.24/x
  3. Step 3: Cross multiply
    211,378.80x = 317,109.56 × 78,260.24
  4. Step 4: Simplify right side
    211,378.80x = 24,817,070,271.89
  5. Step 5: Solve for x
    x = 24,817,070,271.89/211,378.80
  6. Step 6: Final answer
    x = 117,405.67

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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.