Home / 389,518.31-584,342.02-136,733.21

Finding the Fourth Proportional to 389,518.31, 584,342.02 and 136,733.21

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Solution

The fourth proportional to 389,518.31, 584,342.02 and 136,733.21 is: 205,122.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,518.31 : 584,342.02 = 136,733.21 : x
  2. Step 2: Convert to fraction form
    389,518.31/584,342.02 = 136,733.21/x
  3. Step 3: Cross multiply
    389,518.31x = 584,342.02 × 136,733.21
  4. Step 4: Simplify right side
    389,518.31x = 79,898,956,868.94
  5. Step 5: Solve for x
    x = 79,898,956,868.94/389,518.31
  6. Step 6: Final answer
    x = 205,122.47

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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.