Home / 401,128.28-553,238.16-340,898.30

Finding the Fourth Proportional to 401,128.28, 553,238.16 and 340,898.30

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Solution

The fourth proportional to 401,128.28, 553,238.16 and 340,898.30 is: 470,168.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,128.28 : 553,238.16 = 340,898.30 : x
  2. Step 2: Convert to fraction form
    401,128.28/553,238.16 = 340,898.30/x
  3. Step 3: Cross multiply
    401,128.28x = 553,238.16 × 340,898.30
  4. Step 4: Simplify right side
    401,128.28x = 188,597,948,239.13
  5. Step 5: Solve for x
    x = 188,597,948,239.13/401,128.28
  6. Step 6: Final answer
    x = 470,168.67

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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.