Home / 389,130.78-536,999.08-217,048.60

Finding the Fourth Proportional to 389,130.78, 536,999.08 and 217,048.60

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Solution

The fourth proportional to 389,130.78, 536,999.08 and 217,048.60 is: 299,526.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,130.78 : 536,999.08 = 217,048.60 : x
  2. Step 2: Convert to fraction form
    389,130.78/536,999.08 = 217,048.60/x
  3. Step 3: Cross multiply
    389,130.78x = 536,999.08 × 217,048.60
  4. Step 4: Simplify right side
    389,130.78x = 116,554,898,515.29
  5. Step 5: Solve for x
    x = 116,554,898,515.29/389,130.78
  6. Step 6: Final answer
    x = 299,526.29

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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.