Home / 390,103,764.80-585,136,984.80-131,293,601.60

Finding the Fourth Proportional to 390,103,764.80, 585,136,984.80 and 131,293,601.60

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Solution

The fourth proportional to 390,103,764.80, 585,136,984.80 and 131,293,601.60 is: 196,934,121.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,103,764.80 : 585,136,984.80 = 131,293,601.60 : x
  2. Step 2: Convert to fraction form
    390,103,764.80/585,136,984.80 = 131,293,601.60/x
  3. Step 3: Cross multiply
    390,103,764.80x = 585,136,984.80 × 131,293,601.60
  4. Step 4: Simplify right side
    390,103,764.80x = 76,824,742,163,756,448
  5. Step 5: Solve for x
    x = 76,824,742,163,756,448/390,103,764.80
  6. Step 6: Final answer
    x = 196,934,121.37

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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.