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Finding the Fourth Proportional to 388,913.96, 536,510.51 and 259,884.11

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Solution

The fourth proportional to 388,913.96, 536,510.51 and 259,884.11 is: 358,512.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,913.96 : 536,510.51 = 259,884.11 : x
  2. Step 2: Convert to fraction form
    388,913.96/536,510.51 = 259,884.11/x
  3. Step 3: Cross multiply
    388,913.96x = 536,510.51 × 259,884.11
  4. Step 4: Simplify right side
    388,913.96x = 139,430,558,408.91
  5. Step 5: Solve for x
    x = 139,430,558,408.91/388,913.96
  6. Step 6: Final answer
    x = 358,512.61

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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.