Home / 328,544,019.70-492,784,002.15-86,206,923.70

Finding the Fourth Proportional to 328,544,019.70, 492,784,002.15 and 86,206,923.70

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Solution

The fourth proportional to 328,544,019.70, 492,784,002.15 and 86,206,923.70 is: 129,301,981.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,544,019.70 : 492,784,002.15 = 86,206,923.70 : x
  2. Step 2: Convert to fraction form
    328,544,019.70/492,784,002.15 = 86,206,923.70/x
  3. Step 3: Cross multiply
    328,544,019.70x = 492,784,002.15 × 86,206,923.70
  4. Step 4: Simplify right side
    328,544,019.70x = 42,481,392,873,925,688
  5. Step 5: Solve for x
    x = 42,481,392,873,925,688/328,544,019.70
  6. Step 6: Final answer
    x = 129,301,981.86

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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.