Home / 213,869,972.80-320,804,959.20-77,559,803.20

Finding the Fourth Proportional to 213,869,972.80, 320,804,959.20 and 77,559,803.20

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Solution

The fourth proportional to 213,869,972.80, 320,804,959.20 and 77,559,803.20 is: 116,339,704.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,869,972.80 : 320,804,959.20 = 77,559,803.20 : x
  2. Step 2: Convert to fraction form
    213,869,972.80/320,804,959.20 = 77,559,803.20/x
  3. Step 3: Cross multiply
    213,869,972.80x = 320,804,959.20 × 77,559,803.20
  4. Step 4: Simplify right side
    213,869,972.80x = 24,881,569,501,136,028
  5. Step 5: Solve for x
    x = 24,881,569,501,136,028/213,869,972.80
  6. Step 6: Final answer
    x = 116,339,704.80

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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.