Home / 648,319.29-972,268.65-215,921.67

Finding the Fourth Proportional to 648,319.29, 972,268.65 and 215,921.67

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Solution

The fourth proportional to 648,319.29, 972,268.65 and 215,921.67 is: 323,812.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,319.29 : 972,268.65 = 215,921.67 : x
  2. Step 2: Convert to fraction form
    648,319.29/972,268.65 = 215,921.67/x
  3. Step 3: Cross multiply
    648,319.29x = 972,268.65 × 215,921.67
  4. Step 4: Simplify right side
    648,319.29x = 209,933,870,596.65
  5. Step 5: Solve for x
    x = 209,933,870,596.65/648,319.29
  6. Step 6: Final answer
    x = 323,812.47

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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.