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Finding the Fourth Proportional to 421,087.44, 631,670.82 and 117,501.72

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Solution

The fourth proportional to 421,087.44, 631,670.82 and 117,501.72 is: 176,263.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,087.44 : 631,670.82 = 117,501.72 : x
  2. Step 2: Convert to fraction form
    421,087.44/631,670.82 = 117,501.72/x
  3. Step 3: Cross multiply
    421,087.44x = 631,670.82 × 117,501.72
  4. Step 4: Simplify right side
    421,087.44x = 74,222,407,823.81
  5. Step 5: Solve for x
    x = 74,222,407,823.81/421,087.44
  6. Step 6: Final answer
    x = 176,263.65

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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.