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Finding the Fourth Proportional to 389,043, 583,564.50 and 93,555

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Solution

The fourth proportional to 389,043, 583,564.50 and 93,555 is: 140,332.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,043 : 583,564.50 = 93,555 : x
  2. Step 2: Convert to fraction form
    389,043/583,564.50 = 93,555/x
  3. Step 3: Cross multiply
    389,043x = 583,564.50 × 93,555
  4. Step 4: Simplify right side
    389,043x = 54,595,376,797.50
  5. Step 5: Solve for x
    x = 54,595,376,797.50/389,043
  6. Step 6: Final answer
    x = 140,332.50

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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.