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Finding the Fourth Proportional to 281,779.11, 388,797.71 and 167,007.15

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Solution

The fourth proportional to 281,779.11, 388,797.71 and 167,007.15 is: 230,435.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,779.11 : 388,797.71 = 167,007.15 : x
  2. Step 2: Convert to fraction form
    281,779.11/388,797.71 = 167,007.15/x
  3. Step 3: Cross multiply
    281,779.11x = 388,797.71 × 167,007.15
  4. Step 4: Simplify right side
    281,779.11x = 64,931,996,638.59
  5. Step 5: Solve for x
    x = 64,931,996,638.59/281,779.11
  6. Step 6: Final answer
    x = 230,435.81

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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.