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Finding the Fourth Proportional to 370,485.18, 555,727.77 and 90,000.54

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Solution

The fourth proportional to 370,485.18, 555,727.77 and 90,000.54 is: 135,000.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,485.18 : 555,727.77 = 90,000.54 : x
  2. Step 2: Convert to fraction form
    370,485.18/555,727.77 = 90,000.54/x
  3. Step 3: Cross multiply
    370,485.18x = 555,727.77 × 90,000.54
  4. Step 4: Simplify right side
    370,485.18x = 50,015,799,393.00
  5. Step 5: Solve for x
    x = 50,015,799,393.00/370,485.18
  6. Step 6: Final answer
    x = 135,000.81

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1.5x scale

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.