Home / 286,732.79-430,121.06-87,069.72

Finding the Fourth Proportional to 286,732.79, 430,121.06 and 87,069.72

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Solution

The fourth proportional to 286,732.79, 430,121.06 and 87,069.72 is: 130,611.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,732.79 : 430,121.06 = 87,069.72 : x
  2. Step 2: Convert to fraction form
    286,732.79/430,121.06 = 87,069.72/x
  3. Step 3: Cross multiply
    286,732.79x = 430,121.06 × 87,069.72
  4. Step 4: Simplify right side
    286,732.79x = 37,450,520,477.98
  5. Step 5: Solve for x
    x = 37,450,520,477.98/286,732.79
  6. Step 6: Final answer
    x = 130,611.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.