Home / 281,440.15-388,386.89-152,378.61

Finding the Fourth Proportional to 281,440.15, 388,386.89 and 152,378.61

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Solution

The fourth proportional to 281,440.15, 388,386.89 and 152,378.61 is: 210,282.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,440.15 : 388,386.89 = 152,378.61 : x
  2. Step 2: Convert to fraction form
    281,440.15/388,386.89 = 152,378.61/x
  3. Step 3: Cross multiply
    281,440.15x = 388,386.89 × 152,378.61
  4. Step 4: Simplify right side
    281,440.15x = 59,181,854,821.37
  5. Step 5: Solve for x
    x = 59,181,854,821.37/281,440.15
  6. Step 6: Final answer
    x = 210,282.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.