Home / 393,028.13-589,666.80-140,303.20

Finding the Fourth Proportional to 393,028.13, 589,666.80 and 140,303.20

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Solution

The fourth proportional to 393,028.13, 589,666.80 and 140,303.20 is: 210,499.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,028.13 : 589,666.80 = 140,303.20 : x
  2. Step 2: Convert to fraction form
    393,028.13/589,666.80 = 140,303.20/x
  3. Step 3: Cross multiply
    393,028.13x = 589,666.80 × 140,303.20
  4. Step 4: Simplify right side
    393,028.13x = 82,732,138,973.76
  5. Step 5: Solve for x
    x = 82,732,138,973.76/393,028.13
  6. Step 6: Final answer
    x = 210,499.28

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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.