Home / 390,267.98-585,357.24-102,107.45

Finding the Fourth Proportional to 390,267.98, 585,357.24 and 102,107.45

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Solution

The fourth proportional to 390,267.98, 585,357.24 and 102,107.45 is: 153,149.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,267.98 : 585,357.24 = 102,107.45 : x
  2. Step 2: Convert to fraction form
    390,267.98/585,357.24 = 102,107.45/x
  3. Step 3: Cross multiply
    390,267.98x = 585,357.24 × 102,107.45
  4. Step 4: Simplify right side
    390,267.98x = 59,769,332,188.65
  5. Step 5: Solve for x
    x = 59,769,332,188.65/390,267.98
  6. Step 6: Final answer
    x = 153,149.47

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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.