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Finding the Fourth Proportional to 303,572.46, 455,349.45 and 78,927.93

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Solution

The fourth proportional to 303,572.46, 455,349.45 and 78,927.93 is: 118,389.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,572.46 : 455,349.45 = 78,927.93 : x
  2. Step 2: Convert to fraction form
    303,572.46/455,349.45 = 78,927.93/x
  3. Step 3: Cross multiply
    303,572.46x = 455,349.45 × 78,927.93
  4. Step 4: Simplify right side
    303,572.46x = 35,939,789,515.14
  5. Step 5: Solve for x
    x = 35,939,789,515.14/303,572.46
  6. Step 6: Final answer
    x = 118,389.49

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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.