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Finding the Fourth Proportional to 620,728.23, 931,073.94 and 171,476.13

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Solution

The fourth proportional to 620,728.23, 931,073.94 and 171,476.13 is: 257,209.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,728.23 : 931,073.94 = 171,476.13 : x
  2. Step 2: Convert to fraction form
    620,728.23/931,073.94 = 171,476.13/x
  3. Step 3: Cross multiply
    620,728.23x = 931,073.94 × 171,476.13
  4. Step 4: Simplify right side
    620,728.23x = 159,656,955,975.05
  5. Step 5: Solve for x
    x = 159,656,955,975.05/620,728.23
  6. Step 6: Final answer
    x = 257,209.11

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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.