Home / 470,239.24-648,930-255,379.36

Finding the Fourth Proportional to 470,239.24, 648,930 and 255,379.36

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Solution

The fourth proportional to 470,239.24, 648,930 and 255,379.36 is: 352,423.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,239.24 : 648,930 = 255,379.36 : x
  2. Step 2: Convert to fraction form
    470,239.24/648,930 = 255,379.36/x
  3. Step 3: Cross multiply
    470,239.24x = 648,930 × 255,379.36
  4. Step 4: Simplify right side
    470,239.24x = 165,723,328,084.80
  5. Step 5: Solve for x
    x = 165,723,328,084.80/470,239.24
  6. Step 6: Final answer
    x = 352,423.43

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1.5x scale

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.