Home / 261,210,619.73-391,872,616.67-79,453,073.81

Finding the Fourth Proportional to 261,210,619.73, 391,872,616.67 and 79,453,073.81

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Solution

The fourth proportional to 261,210,619.73, 391,872,616.67 and 79,453,073.81 is: 119,196,853.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,210,619.73 : 391,872,616.67 = 79,453,073.81 : x
  2. Step 2: Convert to fraction form
    261,210,619.73/391,872,616.67 = 79,453,073.81/x
  3. Step 3: Cross multiply
    261,210,619.73x = 391,872,616.67 × 79,453,073.81
  4. Step 4: Simplify right side
    261,210,619.73x = 31,135,483,937,577,660
  5. Step 5: Solve for x
    x = 31,135,483,937,577,660/261,210,619.73
  6. Step 6: Final answer
    x = 119,196,853.36

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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.