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Finding the Fourth Proportional to 383,386.53, 575,183.30 and 117,139.77

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Solution

The fourth proportional to 383,386.53, 575,183.30 and 117,139.77 is: 175,741.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,386.53 : 575,183.30 = 117,139.77 : x
  2. Step 2: Convert to fraction form
    383,386.53/575,183.30 = 117,139.77/x
  3. Step 3: Cross multiply
    383,386.53x = 575,183.30 × 117,139.77
  4. Step 4: Simplify right side
    383,386.53x = 67,376,838,884.14
  5. Step 5: Solve for x
    x = 67,376,838,884.14/383,386.53
  6. Step 6: Final answer
    x = 175,741.28

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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.