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Finding the Fourth Proportional to 388,846.86, 583,214.78 and 122,572.71

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Solution

The fourth proportional to 388,846.86, 583,214.78 and 122,572.71 is: 183,841.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,846.86 : 583,214.78 = 122,572.71 : x
  2. Step 2: Convert to fraction form
    388,846.86/583,214.78 = 122,572.71/x
  3. Step 3: Cross multiply
    388,846.86x = 583,214.78 × 122,572.71
  4. Step 4: Simplify right side
    388,846.86x = 71,486,215,483.79
  5. Step 5: Solve for x
    x = 71,486,215,483.79/388,846.86
  6. Step 6: Final answer
    x = 183,841.57

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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.