Home / 389,828.69-537,957.78-217,749.05

Finding the Fourth Proportional to 389,828.69, 537,957.78 and 217,749.05

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Solution

The fourth proportional to 389,828.69, 537,957.78 and 217,749.05 is: 300,490.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,828.69 : 537,957.78 = 217,749.05 : x
  2. Step 2: Convert to fraction form
    389,828.69/537,957.78 = 217,749.05/x
  3. Step 3: Cross multiply
    389,828.69x = 537,957.78 × 217,749.05
  4. Step 4: Simplify right side
    389,828.69x = 117,139,792,845.32
  5. Step 5: Solve for x
    x = 117,139,792,845.32/389,828.69
  6. Step 6: Final answer
    x = 300,490.44

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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.