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Finding the Fourth Proportional to 389,165.57, 583,700.05 and 104,878.36

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Solution

The fourth proportional to 389,165.57, 583,700.05 and 104,878.36 is: 157,304.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,165.57 : 583,700.05 = 104,878.36 : x
  2. Step 2: Convert to fraction form
    389,165.57/583,700.05 = 104,878.36/x
  3. Step 3: Cross multiply
    389,165.57x = 583,700.05 × 104,878.36
  4. Step 4: Simplify right side
    389,165.57x = 61,217,503,451.53
  5. Step 5: Solve for x
    x = 61,217,503,451.53/389,165.57
  6. Step 6: Final answer
    x = 157,304.52

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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.