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Finding the Fourth Proportional to 281,296.82, 388,190.04 and 153,980.48

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Solution

The fourth proportional to 281,296.82, 388,190.04 and 153,980.48 is: 212,493.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,296.82 : 388,190.04 = 153,980.48 : x
  2. Step 2: Convert to fraction form
    281,296.82/388,190.04 = 153,980.48/x
  3. Step 3: Cross multiply
    281,296.82x = 388,190.04 × 153,980.48
  4. Step 4: Simplify right side
    281,296.82x = 59,773,688,690.42
  5. Step 5: Solve for x
    x = 59,773,688,690.42/281,296.82
  6. Step 6: Final answer
    x = 212,493.30

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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.