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Finding the Fourth Proportional to 312,762.62, 431,613.18 and 169,522.52

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Solution

The fourth proportional to 312,762.62, 431,613.18 and 169,522.52 is: 233,941.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,762.62 : 431,613.18 = 169,522.52 : x
  2. Step 2: Convert to fraction form
    312,762.62/431,613.18 = 169,522.52/x
  3. Step 3: Cross multiply
    312,762.62x = 431,613.18 × 169,522.52
  4. Step 4: Simplify right side
    312,762.62x = 73,168,153,938.81
  5. Step 5: Solve for x
    x = 73,168,153,938.81/312,762.62
  6. Step 6: Final answer
    x = 233,941.49

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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.