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Finding the Fourth Proportional to 281,557.83, 388,549.88 and 154,237.95

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Solution

The fourth proportional to 281,557.83, 388,549.88 and 154,237.95 is: 212,848.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,557.83 : 388,549.88 = 154,237.95 : x
  2. Step 2: Convert to fraction form
    281,557.83/388,549.88 = 154,237.95/x
  3. Step 3: Cross multiply
    281,557.83x = 388,549.88 × 154,237.95
  4. Step 4: Simplify right side
    281,557.83x = 59,929,136,192.76
  5. Step 5: Solve for x
    x = 59,929,136,192.76/281,557.83
  6. Step 6: Final answer
    x = 212,848.41

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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.