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Finding the Fourth Proportional to 281,347.62, 388,259.70 and 154,023.21

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Solution

The fourth proportional to 281,347.62, 388,259.70 and 154,023.21 is: 212,552.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,347.62 : 388,259.70 = 154,023.21 : x
  2. Step 2: Convert to fraction form
    281,347.62/388,259.70 = 154,023.21/x
  3. Step 3: Cross multiply
    281,347.62x = 388,259.70 × 154,023.21
  4. Step 4: Simplify right side
    281,347.62x = 59,801,005,307.64
  5. Step 5: Solve for x
    x = 59,801,005,307.64/281,347.62
  6. Step 6: Final answer
    x = 212,552.02

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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.