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Finding the Fourth Proportional to 620,722.23, 931,064.94 and 171,470.13

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Solution

The fourth proportional to 620,722.23, 931,064.94 and 171,470.13 is: 257,200.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,722.23 : 931,064.94 = 171,470.13 : x
  2. Step 2: Convert to fraction form
    620,722.23/931,064.94 = 171,470.13/x
  3. Step 3: Cross multiply
    620,722.23x = 931,064.94 × 171,470.13
  4. Step 4: Simplify right side
    620,722.23x = 159,649,826,300.24
  5. Step 5: Solve for x
    x = 159,649,826,300.24/620,722.23
  6. Step 6: Final answer
    x = 257,200.11

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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.