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Finding the Fourth Proportional to 392,003.52, 540,033.12 and 373,030.08

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Solution

The fourth proportional to 392,003.52, 540,033.12 and 373,030.08 is: 513,894.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,003.52 : 540,033.12 = 373,030.08 : x
  2. Step 2: Convert to fraction form
    392,003.52/540,033.12 = 373,030.08/x
  3. Step 3: Cross multiply
    392,003.52x = 540,033.12 × 373,030.08
  4. Step 4: Simplify right side
    392,003.52x = 201,448,597,956.25
  5. Step 5: Solve for x
    x = 201,448,597,956.25/392,003.52
  6. Step 6: Final answer
    x = 513,894.87

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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.