Home / 261,935,969.40-392,836,937.13-77,660,355.42

Finding the Fourth Proportional to 261,935,969.40, 392,836,937.13 and 77,660,355.42

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Solution

The fourth proportional to 261,935,969.40, 392,836,937.13 and 77,660,355.42 is: 116,470,663.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,935,969.40 : 392,836,937.13 = 77,660,355.42 : x
  2. Step 2: Convert to fraction form
    261,935,969.40/392,836,937.13 = 77,660,355.42/x
  3. Step 3: Cross multiply
    261,935,969.40x = 392,836,937.13 × 77,660,355.42
  4. Step 4: Simplify right side
    261,935,969.40x = 30,507,856,159,619,996
  5. Step 5: Solve for x
    x = 30,507,856,159,619,996/261,935,969.40
  6. Step 6: Final answer
    x = 116,470,663.53

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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.