Home / 213,869,975.80-320,804,963.70-77,559,806.20

Finding the Fourth Proportional to 213,869,975.80, 320,804,963.70 and 77,559,806.20

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Solution

The fourth proportional to 213,869,975.80, 320,804,963.70 and 77,559,806.20 is: 116,339,709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,869,975.80 : 320,804,963.70 = 77,559,806.20 : x
  2. Step 2: Convert to fraction form
    213,869,975.80/320,804,963.70 = 77,559,806.20/x
  3. Step 3: Cross multiply
    213,869,975.80x = 320,804,963.70 × 77,559,806.20
  4. Step 4: Simplify right side
    213,869,975.80x = 24,881,570,812,570,036
  5. Step 5: Solve for x
    x = 24,881,570,812,570,036/213,869,975.80
  6. Step 6: Final answer
    x = 116,339,709.30

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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.