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Finding the Fourth Proportional to 353,428.79, 488,026.02 and 327,785.81

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Solution

The fourth proportional to 353,428.79, 488,026.02 and 327,785.81 is: 452,617.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,428.79 : 488,026.02 = 327,785.81 : x
  2. Step 2: Convert to fraction form
    353,428.79/488,026.02 = 327,785.81/x
  3. Step 3: Cross multiply
    353,428.79x = 488,026.02 × 327,785.81
  4. Step 4: Simplify right side
    353,428.79x = 159,968,001,826.65
  5. Step 5: Solve for x
    x = 159,968,001,826.65/353,428.79
  6. Step 6: Final answer
    x = 452,617.35

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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.