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Finding the Fourth Proportional to 370,405.80, 555,608.70 and 355,890.60

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Solution

The fourth proportional to 370,405.80, 555,608.70 and 355,890.60 is: 533,835.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,405.80 : 555,608.70 = 355,890.60 : x
  2. Step 2: Convert to fraction form
    370,405.80/555,608.70 = 355,890.60/x
  3. Step 3: Cross multiply
    370,405.80x = 555,608.70 × 355,890.60
  4. Step 4: Simplify right side
    370,405.80x = 197,735,913,608.22
  5. Step 5: Solve for x
    x = 197,735,913,608.22/370,405.80
  6. Step 6: Final answer
    x = 533,835.90

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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.