Home / 218,606,275.79-327,966,927.63-78,560,881.20

Finding the Fourth Proportional to 218,606,275.79, 327,966,927.63 and 78,560,881.20

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Solution

The fourth proportional to 218,606,275.79, 327,966,927.63 and 78,560,881.20 is: 117,861,990.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,606,275.79 : 327,966,927.63 = 78,560,881.20 : x
  2. Step 2: Convert to fraction form
    218,606,275.79/327,966,927.63 = 78,560,881.20/x
  3. Step 3: Cross multiply
    218,606,275.79x = 327,966,927.63 × 78,560,881.20
  4. Step 4: Simplify right side
    218,606,275.79x = 25,765,370,837,544,952
  5. Step 5: Solve for x
    x = 25,765,370,837,544,952/218,606,275.79
  6. Step 6: Final answer
    x = 117,861,990.67

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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.