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Finding the Fourth Proportional to 216,590.76, 324,667.98 and 90,300.90

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Solution

The fourth proportional to 216,590.76, 324,667.98 and 90,300.90 is: 135,360.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,590.76 : 324,667.98 = 90,300.90 : x
  2. Step 2: Convert to fraction form
    216,590.76/324,667.98 = 90,300.90/x
  3. Step 3: Cross multiply
    216,590.76x = 324,667.98 × 90,300.90
  4. Step 4: Simplify right side
    216,590.76x = 29,317,810,795.18
  5. Step 5: Solve for x
    x = 29,317,810,795.18/216,590.76
  6. Step 6: Final answer
    x = 135,360.39

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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.