Home / 261,210,621.42-391,872,619.20-79,453,075.50

Finding the Fourth Proportional to 261,210,621.42, 391,872,619.20 and 79,453,075.50

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Solution

The fourth proportional to 261,210,621.42, 391,872,619.20 and 79,453,075.50 is: 119,196,855.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,210,621.42 : 391,872,619.20 = 79,453,075.50 : x
  2. Step 2: Convert to fraction form
    261,210,621.42/391,872,619.20 = 79,453,075.50/x
  3. Step 3: Cross multiply
    261,210,621.42x = 391,872,619.20 × 79,453,075.50
  4. Step 4: Simplify right side
    261,210,621.42x = 31,135,484,799,978,300
  5. Step 5: Solve for x
    x = 31,135,484,799,978,300/261,210,621.42
  6. Step 6: Final answer
    x = 119,196,855.90

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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.