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Finding the Fourth Proportional to 388,337.59, 535,629.82 and 259,210.96

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Solution

The fourth proportional to 388,337.59, 535,629.82 and 259,210.96 is: 357,526.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,337.59 : 535,629.82 = 259,210.96 : x
  2. Step 2: Convert to fraction form
    388,337.59/535,629.82 = 259,210.96/x
  3. Step 3: Cross multiply
    388,337.59x = 535,629.82 × 259,210.96
  4. Step 4: Simplify right side
    388,337.59x = 138,841,120,516.36
  5. Step 5: Solve for x
    x = 138,841,120,516.36/388,337.59
  6. Step 6: Final answer
    x = 357,526.86

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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.