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Finding the Fourth Proportional to 399,504.76, 550,603.64 and 302,476.16

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Solution

The fourth proportional to 399,504.76, 550,603.64 and 302,476.16 is: 416,877.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,504.76 : 550,603.64 = 302,476.16 : x
  2. Step 2: Convert to fraction form
    399,504.76/550,603.64 = 302,476.16/x
  3. Step 3: Cross multiply
    399,504.76x = 550,603.64 × 302,476.16
  4. Step 4: Simplify right side
    399,504.76x = 166,544,474,709.22
  5. Step 5: Solve for x
    x = 166,544,474,709.22/399,504.76
  6. Step 6: Final answer
    x = 416,877.32

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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.