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Finding the Fourth Proportional to 389,165.32, 583,699.67 and 104,878.11

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Solution

The fourth proportional to 389,165.32, 583,699.67 and 104,878.11 is: 157,304.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,165.32 : 583,699.67 = 104,878.11 : x
  2. Step 2: Convert to fraction form
    389,165.32/583,699.67 = 104,878.11/x
  3. Step 3: Cross multiply
    389,165.32x = 583,699.67 × 104,878.11
  4. Step 4: Simplify right side
    389,165.32x = 61,217,318,197.22
  5. Step 5: Solve for x
    x = 61,217,318,197.22/389,165.32
  6. Step 6: Final answer
    x = 157,304.15

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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.