Home / 286,647.08-430,143.48-99,789.80

Finding the Fourth Proportional to 286,647.08, 430,143.48 and 99,789.80

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Solution

The fourth proportional to 286,647.08, 430,143.48 and 99,789.80 is: 149,744.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,647.08 : 430,143.48 = 99,789.80 : x
  2. Step 2: Convert to fraction form
    286,647.08/430,143.48 = 99,789.80/x
  3. Step 3: Cross multiply
    286,647.08x = 430,143.48 × 99,789.80
  4. Step 4: Simplify right side
    286,647.08x = 42,923,931,840.50
  5. Step 5: Solve for x
    x = 42,923,931,840.50/286,647.08
  6. Step 6: Final answer
    x = 149,744.88

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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.