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Finding the Fourth Proportional to 303,430.62, 455,155.68 and 103,742.94

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Solution

The fourth proportional to 303,430.62, 455,155.68 and 103,742.94 is: 155,617.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,430.62 : 455,155.68 = 103,742.94 : x
  2. Step 2: Convert to fraction form
    303,430.62/455,155.68 = 103,742.94/x
  3. Step 3: Cross multiply
    303,430.62x = 455,155.68 × 103,742.94
  4. Step 4: Simplify right side
    303,430.62x = 47,219,188,400.90
  5. Step 5: Solve for x
    x = 47,219,188,400.90/303,430.62
  6. Step 6: Final answer
    x = 155,617.74

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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.