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Finding the Fourth Proportional to 370,124.91, 555,415.79 and 145,445.90

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Solution

The fourth proportional to 370,124.91, 555,415.79 and 145,445.90 is: 218,258.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,124.91 : 555,415.79 = 145,445.90 : x
  2. Step 2: Convert to fraction form
    370,124.91/555,415.79 = 145,445.90/x
  3. Step 3: Cross multiply
    370,124.91x = 555,415.79 × 145,445.90
  4. Step 4: Simplify right side
    370,124.91x = 80,782,945,946.45
  5. Step 5: Solve for x
    x = 80,782,945,946.45/370,124.91
  6. Step 6: Final answer
    x = 218,258.60

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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.