Home / 390,738.04-585,711.78-154,247.20

Finding the Fourth Proportional to 390,738.04, 585,711.78 and 154,247.20

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Solution

The fourth proportional to 390,738.04, 585,711.78 and 154,247.20 is: 231,214.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,738.04 : 585,711.78 = 154,247.20 : x
  2. Step 2: Convert to fraction form
    390,738.04/585,711.78 = 154,247.20/x
  3. Step 3: Cross multiply
    390,738.04x = 585,711.78 × 154,247.20
  4. Step 4: Simplify right side
    390,738.04x = 90,344,402,072.02
  5. Step 5: Solve for x
    x = 90,344,402,072.02/390,738.04
  6. Step 6: Final answer
    x = 231,214.76

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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.