Home / 261,210,621.48-391,872,619.30-79,453,075.56

Finding the Fourth Proportional to 261,210,621.48, 391,872,619.30 and 79,453,075.56

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Solution

The fourth proportional to 261,210,621.48, 391,872,619.30 and 79,453,075.56 is: 119,196,855.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,210,621.48 : 391,872,619.30 = 79,453,075.56 : x
  2. Step 2: Convert to fraction form
    261,210,621.48/391,872,619.30 = 79,453,075.56/x
  3. Step 3: Cross multiply
    261,210,621.48x = 391,872,619.30 × 79,453,075.56
  4. Step 4: Simplify right side
    261,210,621.48x = 31,135,484,831,138,016
  5. Step 5: Solve for x
    x = 31,135,484,831,138,016/261,210,621.48
  6. Step 6: Final answer
    x = 119,196,855.99

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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.