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Finding the Fourth Proportional to 303,312.71, 455,022.54 and 103,586.28

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Solution

The fourth proportional to 303,312.71, 455,022.54 and 103,586.28 is: 155,397.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,312.71 : 455,022.54 = 103,586.28 : x
  2. Step 2: Convert to fraction form
    303,312.71/455,022.54 = 103,586.28/x
  3. Step 3: Cross multiply
    303,312.71x = 455,022.54 × 103,586.28
  4. Step 4: Simplify right side
    303,312.71x = 47,134,092,234.75
  5. Step 5: Solve for x
    x = 47,134,092,234.75/303,312.71
  6. Step 6: Final answer
    x = 155,397.68

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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.