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Finding the Fourth Proportional to 315,705.09, 473,561.74 and 105,343.03

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Solution

The fourth proportional to 315,705.09, 473,561.74 and 105,343.03 is: 158,015.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,705.09 : 473,561.74 = 105,343.03 : x
  2. Step 2: Convert to fraction form
    315,705.09/473,561.74 = 105,343.03/x
  3. Step 3: Cross multiply
    315,705.09x = 473,561.74 × 105,343.03
  4. Step 4: Simplify right side
    315,705.09x = 49,886,428,583.67
  5. Step 5: Solve for x
    x = 49,886,428,583.67/315,705.09
  6. Step 6: Final answer
    x = 158,015.91

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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.