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Finding the Fourth Proportional to 532,390.67, 734,715.19 and 302,980.86

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Solution

The fourth proportional to 532,390.67, 734,715.19 and 302,980.86 is: 418,122.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,390.67 : 734,715.19 = 302,980.86 : x
  2. Step 2: Convert to fraction form
    532,390.67/734,715.19 = 302,980.86/x
  3. Step 3: Cross multiply
    532,390.67x = 734,715.19 × 302,980.86
  4. Step 4: Simplify right side
    532,390.67x = 222,604,640,121.26
  5. Step 5: Solve for x
    x = 222,604,640,121.26/532,390.67
  6. Step 6: Final answer
    x = 418,122.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.