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Finding the Fourth Proportional to 400,399.67, 553,151.69 and 262,904.79

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Solution

The fourth proportional to 400,399.67, 553,151.69 and 262,904.79 is: 363,202.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,399.67 : 553,151.69 = 262,904.79 : x
  2. Step 2: Convert to fraction form
    400,399.67/553,151.69 = 262,904.79/x
  3. Step 3: Cross multiply
    400,399.67x = 553,151.69 × 262,904.79
  4. Step 4: Simplify right side
    400,399.67x = 145,426,227,583.07
  5. Step 5: Solve for x
    x = 145,426,227,583.07/400,399.67
  6. Step 6: Final answer
    x = 363,202.67

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1.5x scale

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.