Home / 509,905.47-764,296.76-210,221.67

Finding the Fourth Proportional to 509,905.47, 764,296.76 and 210,221.67

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Solution

The fourth proportional to 509,905.47, 764,296.76 and 210,221.67 is: 315,101.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,905.47 : 764,296.76 = 210,221.67 : x
  2. Step 2: Convert to fraction form
    509,905.47/764,296.76 = 210,221.67/x
  3. Step 3: Cross multiply
    509,905.47x = 764,296.76 × 210,221.67
  4. Step 4: Simplify right side
    509,905.47x = 160,671,740,211.68
  5. Step 5: Solve for x
    x = 160,671,740,211.68/509,905.47
  6. Step 6: Final answer
    x = 315,101.03

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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.