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Finding the Fourth Proportional to 383,430.60, 575,405.10 and 214,950.60

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Solution

The fourth proportional to 383,430.60, 575,405.10 and 214,950.60 is: 322,571.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,430.60 : 575,405.10 = 214,950.60 : x
  2. Step 2: Convert to fraction form
    383,430.60/575,405.10 = 214,950.60/x
  3. Step 3: Cross multiply
    383,430.60x = 575,405.10 × 214,950.60
  4. Step 4: Simplify right side
    383,430.60x = 123,683,671,488.06
  5. Step 5: Solve for x
    x = 123,683,671,488.06/383,430.60
  6. Step 6: Final answer
    x = 322,571.21

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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.