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Finding the Fourth Proportional to 370,403.52, 555,223.91 and 145,672.85

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Solution

The fourth proportional to 370,403.52, 555,223.91 and 145,672.85 is: 218,359.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,403.52 : 555,223.91 = 145,672.85 : x
  2. Step 2: Convert to fraction form
    370,403.52/555,223.91 = 145,672.85/x
  3. Step 3: Cross multiply
    370,403.52x = 555,223.91 × 145,672.85
  4. Step 4: Simplify right side
    370,403.52x = 80,881,045,853.36
  5. Step 5: Solve for x
    x = 80,881,045,853.36/370,403.52
  6. Step 6: Final answer
    x = 218,359.28

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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.