Home / 205,525.40-308,312.84-72,378.16

Finding the Fourth Proportional to 205,525.40, 308,312.84 and 72,378.16

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Solution

The fourth proportional to 205,525.40, 308,312.84 and 72,378.16 is: 108,575.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,525.40 : 308,312.84 = 72,378.16 : x
  2. Step 2: Convert to fraction form
    205,525.40/308,312.84 = 72,378.16/x
  3. Step 3: Cross multiply
    205,525.40x = 308,312.84 × 72,378.16
  4. Step 4: Simplify right side
    205,525.40x = 22,315,116,063.57
  5. Step 5: Solve for x
    x = 22,315,116,063.57/205,525.40
  6. Step 6: Final answer
    x = 108,575.95

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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.