Home / 389,621.40-585,123.30-301,090.20

Finding the Fourth Proportional to 389,621.40, 585,123.30 and 301,090.20

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Solution

The fourth proportional to 389,621.40, 585,123.30 and 301,090.20 is: 452,169.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,621.40 : 585,123.30 = 301,090.20 : x
  2. Step 2: Convert to fraction form
    389,621.40/585,123.30 = 301,090.20/x
  3. Step 3: Cross multiply
    389,621.40x = 585,123.30 × 301,090.20
  4. Step 4: Simplify right side
    389,621.40x = 176,174,891,421.66
  5. Step 5: Solve for x
    x = 176,174,891,421.66/389,621.40
  6. Step 6: Final answer
    x = 452,169.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.