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Finding the Fourth Proportional to 286,632.08, 430,120.92 and 99,774.80

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Solution

The fourth proportional to 286,632.08, 430,120.92 and 99,774.80 is: 149,722.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,632.08 : 430,120.92 = 99,774.80 : x
  2. Step 2: Convert to fraction form
    286,632.08/430,120.92 = 99,774.80/x
  3. Step 3: Cross multiply
    286,632.08x = 430,120.92 × 99,774.80
  4. Step 4: Simplify right side
    286,632.08x = 42,915,228,768.82
  5. Step 5: Solve for x
    x = 42,915,228,768.82/286,632.08
  6. Step 6: Final answer
    x = 149,722.35

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1.5x scale

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.