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Finding the Fourth Proportional to 389,910.04, 584,920.86 and 120,061.01

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Solution

The fourth proportional to 389,910.04, 584,920.86 and 120,061.01 is: 180,108.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,910.04 : 584,920.86 = 120,061.01 : x
  2. Step 2: Convert to fraction form
    389,910.04/584,920.86 = 120,061.01/x
  3. Step 3: Cross multiply
    389,910.04x = 584,920.86 × 120,061.01
  4. Step 4: Simplify right side
    389,910.04x = 70,226,190,233.74
  5. Step 5: Solve for x
    x = 70,226,190,233.74/389,910.04
  6. Step 6: Final answer
    x = 180,108.70

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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.