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Finding the Fourth Proportional to 388,814.63, 583,221.95 and 93,326.63

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Solution

The fourth proportional to 388,814.63, 583,221.95 and 93,326.63 is: 139,989.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,814.63 : 583,221.95 = 93,326.63 : x
  2. Step 2: Convert to fraction form
    388,814.63/583,221.95 = 93,326.63/x
  3. Step 3: Cross multiply
    388,814.63x = 583,221.95 × 93,326.63
  4. Step 4: Simplify right side
    388,814.63x = 54,430,135,752.79
  5. Step 5: Solve for x
    x = 54,430,135,752.79/388,814.63
  6. Step 6: Final answer
    x = 139,989.94

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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.