Home / 261,210,621.23-391,872,618.92-79,453,075.31

Finding the Fourth Proportional to 261,210,621.23, 391,872,618.92 and 79,453,075.31

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Solution

The fourth proportional to 261,210,621.23, 391,872,618.92 and 79,453,075.31 is: 119,196,855.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,210,621.23 : 391,872,618.92 = 79,453,075.31 : x
  2. Step 2: Convert to fraction form
    261,210,621.23/391,872,618.92 = 79,453,075.31/x
  3. Step 3: Cross multiply
    261,210,621.23x = 391,872,618.92 × 79,453,075.31
  4. Step 4: Simplify right side
    261,210,621.23x = 31,135,484,704,156,008
  5. Step 5: Solve for x
    x = 31,135,484,704,156,008/261,210,621.23
  6. Step 6: Final answer
    x = 119,196,855.62

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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.