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Finding the Fourth Proportional to 620,730.26, 931,076.94 and 171,478.16

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Solution

The fourth proportional to 620,730.26, 931,076.94 and 171,478.16 is: 257,212.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,730.26 : 931,076.94 = 171,478.16 : x
  2. Step 2: Convert to fraction form
    620,730.26/931,076.94 = 171,478.16/x
  3. Step 3: Cross multiply
    620,730.26x = 931,076.94 × 171,478.16
  4. Step 4: Simplify right side
    620,730.26x = 159,659,360,489.63
  5. Step 5: Solve for x
    x = 159,659,360,489.63/620,730.26
  6. Step 6: Final answer
    x = 257,212.14

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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.