Home / 389,655.07-584,486.85-136,942.76

Finding the Fourth Proportional to 389,655.07, 584,486.85 and 136,942.76

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Solution

The fourth proportional to 389,655.07, 584,486.85 and 136,942.76 is: 205,415.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,655.07 : 584,486.85 = 136,942.76 : x
  2. Step 2: Convert to fraction form
    389,655.07/584,486.85 = 136,942.76/x
  3. Step 3: Cross multiply
    389,655.07x = 584,486.85 × 136,942.76
  4. Step 4: Simplify right side
    389,655.07x = 80,041,242,422.71
  5. Step 5: Solve for x
    x = 80,041,242,422.71/389,655.07
  6. Step 6: Final answer
    x = 205,415.63

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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.