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Finding the Fourth Proportional to 201,855,488.80, 302,924,950.80 and 86,922,515.20

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Solution

The fourth proportional to 201,855,488.80, 302,924,950.80 and 86,922,515.20 is: 130,444,798.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,855,488.80 : 302,924,950.80 = 86,922,515.20 : x
  2. Step 2: Convert to fraction form
    201,855,488.80/302,924,950.80 = 86,922,515.20/x
  3. Step 3: Cross multiply
    201,855,488.80x = 302,924,950.80 × 86,922,515.20
  4. Step 4: Simplify right side
    201,855,488.80x = 26,330,998,640,372,256
  5. Step 5: Solve for x
    x = 26,330,998,640,372,256/201,855,488.80
  6. Step 6: Final answer
    x = 130,444,798.89

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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.