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Finding the Fourth Proportional to 370,470.56, 555,698.16 and 89,989.28

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Solution

The fourth proportional to 370,470.56, 555,698.16 and 89,989.28 is: 134,982.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,470.56 : 555,698.16 = 89,989.28 : x
  2. Step 2: Convert to fraction form
    370,470.56/555,698.16 = 89,989.28/x
  3. Step 3: Cross multiply
    370,470.56x = 555,698.16 × 89,989.28
  4. Step 4: Simplify right side
    370,470.56x = 50,006,877,315.72
  5. Step 5: Solve for x
    x = 50,006,877,315.72/370,470.56
  6. Step 6: Final answer
    x = 134,982.05

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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.