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Finding the Fourth Proportional to 303,643.45, 455,160.36 and 103,827.18

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Solution

The fourth proportional to 303,643.45, 455,160.36 and 103,827.18 is: 155,636.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,643.45 : 455,160.36 = 103,827.18 : x
  2. Step 2: Convert to fraction form
    303,643.45/455,160.36 = 103,827.18/x
  3. Step 3: Cross multiply
    303,643.45x = 455,160.36 × 103,827.18
  4. Step 4: Simplify right side
    303,643.45x = 47,258,018,722.79
  5. Step 5: Solve for x
    x = 47,258,018,722.79/303,643.45
  6. Step 6: Final answer
    x = 155,636.55

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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.