Home / 281,271.84-388,155.13-153,947.43

Finding the Fourth Proportional to 281,271.84, 388,155.13 and 153,947.43

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Solution

The fourth proportional to 281,271.84, 388,155.13 and 153,947.43 is: 212,447.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,271.84 : 388,155.13 = 153,947.43 : x
  2. Step 2: Convert to fraction form
    281,271.84/388,155.13 = 153,947.43/x
  3. Step 3: Cross multiply
    281,271.84x = 388,155.13 × 153,947.43
  4. Step 4: Simplify right side
    281,271.84x = 59,755,484,704.82
  5. Step 5: Solve for x
    x = 59,755,484,704.82/281,271.84
  6. Step 6: Final answer
    x = 212,447.45

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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.