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Finding the Fourth Proportional to 530,550.45, 732,137.22 and 288,828

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Solution

The fourth proportional to 530,550.45, 732,137.22 and 288,828 is: 398,570.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,550.45 : 732,137.22 = 288,828 : x
  2. Step 2: Convert to fraction form
    530,550.45/732,137.22 = 288,828/x
  3. Step 3: Cross multiply
    530,550.45x = 732,137.22 × 288,828
  4. Step 4: Simplify right side
    530,550.45x = 211,461,728,978.16
  5. Step 5: Solve for x
    x = 211,461,728,978.16/530,550.45
  6. Step 6: Final answer
    x = 398,570.45

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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.