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Finding the Fourth Proportional to 370,649.72, 555,763.88 and 145,888.28

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Solution

The fourth proportional to 370,649.72, 555,763.88 and 145,888.28 is: 218,749.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,649.72 : 555,763.88 = 145,888.28 : x
  2. Step 2: Convert to fraction form
    370,649.72/555,763.88 = 145,888.28/x
  3. Step 3: Cross multiply
    370,649.72x = 555,763.88 × 145,888.28
  4. Step 4: Simplify right side
    370,649.72x = 81,079,436,539.33
  5. Step 5: Solve for x
    x = 81,079,436,539.33/370,649.72
  6. Step 6: Final answer
    x = 218,749.49

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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.