Home / 421,236,979.56-631,941,647.06-144,852,299.53

Finding the Fourth Proportional to 421,236,979.56, 631,941,647.06 and 144,852,299.53

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Solution

The fourth proportional to 421,236,979.56, 631,941,647.06 and 144,852,299.53 is: 217,308,083.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,236,979.56 : 631,941,647.06 = 144,852,299.53 : x
  2. Step 2: Convert to fraction form
    421,236,979.56/631,941,647.06 = 144,852,299.53/x
  3. Step 3: Cross multiply
    421,236,979.56x = 631,941,647.06 × 144,852,299.53
  4. Step 4: Simplify right side
    421,236,979.56x = 91,538,200,745,416,656
  5. Step 5: Solve for x
    x = 91,538,200,745,416,656/421,236,979.56
  6. Step 6: Final answer
    x = 217,308,083.54

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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.