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Finding the Fourth Proportional to 354,129.56, 488,686.38 and 192,981.32

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Solution

The fourth proportional to 354,129.56, 488,686.38 and 192,981.32 is: 266,307.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,129.56 : 488,686.38 = 192,981.32 : x
  2. Step 2: Convert to fraction form
    354,129.56/488,686.38 = 192,981.32/x
  3. Step 3: Cross multiply
    354,129.56x = 488,686.38 × 192,981.32
  4. Step 4: Simplify right side
    354,129.56x = 94,307,342,678.42
  5. Step 5: Solve for x
    x = 94,307,342,678.42/354,129.56
  6. Step 6: Final answer
    x = 266,307.46

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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.