Home / 388,176.03-535,676.90-218,410.56

Finding the Fourth Proportional to 388,176.03, 535,676.90 and 218,410.56

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Solution

The fourth proportional to 388,176.03, 535,676.90 and 218,410.56 is: 301,403.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,176.03 : 535,676.90 = 218,410.56 : x
  2. Step 2: Convert to fraction form
    388,176.03/535,676.90 = 218,410.56/x
  3. Step 3: Cross multiply
    388,176.03x = 535,676.90 × 218,410.56
  4. Step 4: Simplify right side
    388,176.03x = 116,997,490,616.01
  5. Step 5: Solve for x
    x = 116,997,490,616.01/388,176.03
  6. Step 6: Final answer
    x = 301,403.18

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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.