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Finding the Fourth Proportional to 281,230.12, 388,107.30 and 160,389.64

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Solution

The fourth proportional to 281,230.12, 388,107.30 and 160,389.64 is: 221,343.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,230.12 : 388,107.30 = 160,389.64 : x
  2. Step 2: Convert to fraction form
    281,230.12/388,107.30 = 160,389.64/x
  3. Step 3: Cross multiply
    281,230.12x = 388,107.30 × 160,389.64
  4. Step 4: Simplify right side
    281,230.12x = 62,248,390,128.37
  5. Step 5: Solve for x
    x = 62,248,390,128.37/281,230.12
  6. Step 6: Final answer
    x = 221,343.25

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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.