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Finding the Fourth Proportional to 281,172.74, 388,017.96 and 153,848.30

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Solution

The fourth proportional to 281,172.74, 388,017.96 and 153,848.30 is: 212,310.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,172.74 : 388,017.96 = 153,848.30 : x
  2. Step 2: Convert to fraction form
    281,172.74/388,017.96 = 153,848.30/x
  3. Step 3: Cross multiply
    281,172.74x = 388,017.96 × 153,848.30
  4. Step 4: Simplify right side
    281,172.74x = 59,695,903,515.47
  5. Step 5: Solve for x
    x = 59,695,903,515.47/281,172.74
  6. Step 6: Final answer
    x = 212,310.42

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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.