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Finding the Fourth Proportional to 303,349.95, 455,024.93 and 103,640.40

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Solution

The fourth proportional to 303,349.95, 455,024.93 and 103,640.40 is: 155,460.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,349.95 : 455,024.93 = 103,640.40 : x
  2. Step 2: Convert to fraction form
    303,349.95/455,024.93 = 103,640.40/x
  3. Step 3: Cross multiply
    303,349.95x = 455,024.93 × 103,640.40
  4. Step 4: Simplify right side
    303,349.95x = 47,158,965,755.17
  5. Step 5: Solve for x
    x = 47,158,965,755.17/303,349.95
  6. Step 6: Final answer
    x = 155,460.60

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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.