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Finding the Fourth Proportional to 357,339.36, 536,015.91 and 87,469.81

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Solution

The fourth proportional to 357,339.36, 536,015.91 and 87,469.81 is: 131,206.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,339.36 : 536,015.91 = 87,469.81 : x
  2. Step 2: Convert to fraction form
    357,339.36/536,015.91 = 87,469.81/x
  3. Step 3: Cross multiply
    357,339.36x = 536,015.91 × 87,469.81
  4. Step 4: Simplify right side
    357,339.36x = 46,885,209,804.68
  5. Step 5: Solve for x
    x = 46,885,209,804.68/357,339.36
  6. Step 6: Final answer
    x = 131,206.40

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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.