Home / 286,215.06-429,337.77-86,530.35

Finding the Fourth Proportional to 286,215.06, 429,337.77 and 86,530.35

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Solution

The fourth proportional to 286,215.06, 429,337.77 and 86,530.35 is: 129,800.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,215.06 : 429,337.77 = 86,530.35 : x
  2. Step 2: Convert to fraction form
    286,215.06/429,337.77 = 86,530.35/x
  3. Step 3: Cross multiply
    286,215.06x = 429,337.77 × 86,530.35
  4. Step 4: Simplify right side
    286,215.06x = 37,150,747,106.92
  5. Step 5: Solve for x
    x = 37,150,747,106.92/286,215.06
  6. Step 6: Final answer
    x = 129,800.11

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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.