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Finding the Fourth Proportional to 303,386.55, 455,207.40 and 162,981.15

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Solution

The fourth proportional to 303,386.55, 455,207.40 and 162,981.15 is: 244,540.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,386.55 : 455,207.40 = 162,981.15 : x
  2. Step 2: Convert to fraction form
    303,386.55/455,207.40 = 162,981.15/x
  3. Step 3: Cross multiply
    303,386.55x = 455,207.40 × 162,981.15
  4. Step 4: Simplify right side
    303,386.55x = 74,190,225,540.51
  5. Step 5: Solve for x
    x = 74,190,225,540.51/303,386.55
  6. Step 6: Final answer
    x = 244,540.26

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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.