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Finding the Fourth Proportional to 353,931.48, 488,418.48 and 192,784.68

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Solution

The fourth proportional to 353,931.48, 488,418.48 and 192,784.68 is: 266,039.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,931.48 : 488,418.48 = 192,784.68 : x
  2. Step 2: Convert to fraction form
    353,931.48/488,418.48 = 192,784.68/x
  3. Step 3: Cross multiply
    353,931.48x = 488,418.48 × 192,784.68
  4. Step 4: Simplify right side
    353,931.48x = 94,159,600,372.89
  5. Step 5: Solve for x
    x = 94,159,600,372.89/353,931.48
  6. Step 6: Final answer
    x = 266,039.07

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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.