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Finding the Fourth Proportional to 326,603.60, 489,779.44 and 126,897.69

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Solution

The fourth proportional to 326,603.60, 489,779.44 and 126,897.69 is: 190,297.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,603.60 : 489,779.44 = 126,897.69 : x
  2. Step 2: Convert to fraction form
    326,603.60/489,779.44 = 126,897.69/x
  3. Step 3: Cross multiply
    326,603.60x = 489,779.44 × 126,897.69
  4. Step 4: Simplify right side
    326,603.60x = 62,151,879,545.49
  5. Step 5: Solve for x
    x = 62,151,879,545.49/326,603.60
  6. Step 6: Final answer
    x = 190,297.59

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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.