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Finding the Fourth Proportional to 370,208.72, 555,308.16 and 89,728.40

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Solution

The fourth proportional to 370,208.72, 555,308.16 and 89,728.40 is: 134,591.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,208.72 : 555,308.16 = 89,728.40 : x
  2. Step 2: Convert to fraction form
    370,208.72/555,308.16 = 89,728.40/x
  3. Step 3: Cross multiply
    370,208.72x = 555,308.16 × 89,728.40
  4. Step 4: Simplify right side
    370,208.72x = 49,826,912,703.74
  5. Step 5: Solve for x
    x = 49,826,912,703.74/370,208.72
  6. Step 6: Final answer
    x = 134,591.41

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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.