Home / 281,329.02-421,683.93-138,963.51

Finding the Fourth Proportional to 281,329.02, 421,683.93 and 138,963.51

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Solution

The fourth proportional to 281,329.02, 421,683.93 and 138,963.51 is: 208,292.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,329.02 : 421,683.93 = 138,963.51 : x
  2. Step 2: Convert to fraction form
    281,329.02/421,683.93 = 138,963.51/x
  3. Step 3: Cross multiply
    281,329.02x = 421,683.93 × 138,963.51
  4. Step 4: Simplify right side
    281,329.02x = 58,598,679,023.39
  5. Step 5: Solve for x
    x = 58,598,679,023.39/281,329.02
  6. Step 6: Final answer
    x = 208,292.34

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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.