Home / 390,131.20-585,196.80-384,226.30

Finding the Fourth Proportional to 390,131.20, 585,196.80 and 384,226.30

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Solution

The fourth proportional to 390,131.20, 585,196.80 and 384,226.30 is: 576,339.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,131.20 : 585,196.80 = 384,226.30 : x
  2. Step 2: Convert to fraction form
    390,131.20/585,196.80 = 384,226.30/x
  3. Step 3: Cross multiply
    390,131.20x = 585,196.80 × 384,226.30
  4. Step 4: Simplify right side
    390,131.20x = 224,848,001,235.84
  5. Step 5: Solve for x
    x = 224,848,001,235.84/390,131.20
  6. Step 6: Final answer
    x = 576,339.45

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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.