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Finding the Fourth Proportional to 355,707.51, 533,562.16 and 145,345.44

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Solution

The fourth proportional to 355,707.51, 533,562.16 and 145,345.44 is: 218,018.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,707.51 : 533,562.16 = 145,345.44 : x
  2. Step 2: Convert to fraction form
    355,707.51/533,562.16 = 145,345.44/x
  3. Step 3: Cross multiply
    355,707.51x = 533,562.16 × 145,345.44
  4. Step 4: Simplify right side
    355,707.51x = 77,550,826,912.55
  5. Step 5: Solve for x
    x = 77,550,826,912.55/355,707.51
  6. Step 6: Final answer
    x = 218,018.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.