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Finding the Fourth Proportional to 286,774.03, 430,239.62 and 87,100.93

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Solution

The fourth proportional to 286,774.03, 430,239.62 and 87,100.93 is: 130,675.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,774.03 : 430,239.62 = 87,100.93 : x
  2. Step 2: Convert to fraction form
    286,774.03/430,239.62 = 87,100.93/x
  3. Step 3: Cross multiply
    286,774.03x = 430,239.62 × 87,100.93
  4. Step 4: Simplify right side
    286,774.03x = 37,474,271,024.85
  5. Step 5: Solve for x
    x = 37,474,271,024.85/286,774.03
  6. Step 6: Final answer
    x = 130,675.26

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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.