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Finding the Fourth Proportional to 281,317.50, 388,203.24 and 153,968.46

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Solution

The fourth proportional to 281,317.50, 388,203.24 and 153,968.46 is: 212,468.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,317.50 : 388,203.24 = 153,968.46 : x
  2. Step 2: Convert to fraction form
    281,317.50/388,203.24 = 153,968.46/x
  3. Step 3: Cross multiply
    281,317.50x = 388,203.24 × 153,968.46
  4. Step 4: Simplify right side
    281,317.50x = 59,771,055,029.81
  5. Step 5: Solve for x
    x = 59,771,055,029.81/281,317.50
  6. Step 6: Final answer
    x = 212,468.31

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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.