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Finding the Fourth Proportional to 286,625.72, 430,000.42 and 86,962.18

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Solution

The fourth proportional to 286,625.72, 430,000.42 and 86,962.18 is: 130,462.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,625.72 : 430,000.42 = 86,962.18 : x
  2. Step 2: Convert to fraction form
    286,625.72/430,000.42 = 86,962.18/x
  3. Step 3: Cross multiply
    286,625.72x = 430,000.42 × 86,962.18
  4. Step 4: Simplify right side
    286,625.72x = 37,393,773,924.12
  5. Step 5: Solve for x
    x = 37,393,773,924.12/286,625.72
  6. Step 6: Final answer
    x = 130,462.03

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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.