Home / 281,261.34-388,138.35-153,936.63

Finding the Fourth Proportional to 281,261.34, 388,138.35 and 153,936.63

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Solution

The fourth proportional to 281,261.34, 388,138.35 and 153,936.63 is: 212,431.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,261.34 : 388,138.35 = 153,936.63 : x
  2. Step 2: Convert to fraction form
    281,261.34/388,138.35 = 153,936.63/x
  3. Step 3: Cross multiply
    281,261.34x = 388,138.35 × 153,936.63
  4. Step 4: Simplify right side
    281,261.34x = 59,748,709,572.76
  5. Step 5: Solve for x
    x = 59,748,709,572.76/281,261.34
  6. Step 6: Final answer
    x = 212,431.29

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1.5x scale

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.