Home / 290,511.72-435,779.91-90,835.83

Finding the Fourth Proportional to 290,511.72, 435,779.91 and 90,835.83

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Solution

The fourth proportional to 290,511.72, 435,779.91 and 90,835.83 is: 136,257.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,511.72 : 435,779.91 = 90,835.83 : x
  2. Step 2: Convert to fraction form
    290,511.72/435,779.91 = 90,835.83/x
  3. Step 3: Cross multiply
    290,511.72x = 435,779.91 × 90,835.83
  4. Step 4: Simplify right side
    290,511.72x = 39,584,429,822.18
  5. Step 5: Solve for x
    x = 39,584,429,822.18/290,511.72
  6. Step 6: Final answer
    x = 136,257.60

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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.