Home / 290,689,748.45-435,858,995.50-115,839,681.65

Finding the Fourth Proportional to 290,689,748.45, 435,858,995.50 and 115,839,681.65

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Solution

The fourth proportional to 290,689,748.45, 435,858,995.50 and 115,839,681.65 is: 173,689,535.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,689,748.45 : 435,858,995.50 = 115,839,681.65 : x
  2. Step 2: Convert to fraction form
    290,689,748.45/435,858,995.50 = 115,839,681.65/x
  3. Step 3: Cross multiply
    290,689,748.45x = 435,858,995.50 × 115,839,681.65
  4. Step 4: Simplify right side
    290,689,748.45x = 50,489,767,283,008,784
  5. Step 5: Solve for x
    x = 50,489,767,283,008,784/290,689,748.45
  6. Step 6: Final answer
    x = 173,689,535.16

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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.