Home / 391,929.03-540,846.32-230,790.87

Finding the Fourth Proportional to 391,929.03, 540,846.32 and 230,790.87

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Solution

The fourth proportional to 391,929.03, 540,846.32 and 230,790.87 is: 318,482.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,929.03 : 540,846.32 = 230,790.87 : x
  2. Step 2: Convert to fraction form
    391,929.03/540,846.32 = 230,790.87/x
  3. Step 3: Cross multiply
    391,929.03x = 540,846.32 × 230,790.87
  4. Step 4: Simplify right side
    391,929.03x = 124,822,391,575.14
  5. Step 5: Solve for x
    x = 124,822,391,575.14/391,929.03
  6. Step 6: Final answer
    x = 318,482.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.