Home / 745,131.38-1,117,707.54-212,652.47

Finding the Fourth Proportional to 745,131.38, 1,117,707.54 and 212,652.47

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Solution

The fourth proportional to 745,131.38, 1,117,707.54 and 212,652.47 is: 318,981.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,131.38 : 1,117,707.54 = 212,652.47 : x
  2. Step 2: Convert to fraction form
    745,131.38/1,117,707.54 = 212,652.47/x
  3. Step 3: Cross multiply
    745,131.38x = 1,117,707.54 × 212,652.47
  4. Step 4: Simplify right side
    745,131.38x = 237,683,263,530.09
  5. Step 5: Solve for x
    x = 237,683,263,530.09/745,131.38
  6. Step 6: Final answer
    x = 318,981.69

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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.