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Finding the Fourth Proportional to 370,220.72, 555,326.16 and 89,740.40

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Solution

The fourth proportional to 370,220.72, 555,326.16 and 89,740.40 is: 134,609.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,220.72 : 555,326.16 = 89,740.40 : x
  2. Step 2: Convert to fraction form
    370,220.72/555,326.16 = 89,740.40/x
  3. Step 3: Cross multiply
    370,220.72x = 555,326.16 × 89,740.40
  4. Step 4: Simplify right side
    370,220.72x = 49,835,191,728.86
  5. Step 5: Solve for x
    x = 49,835,191,728.86/370,220.72
  6. Step 6: Final answer
    x = 134,609.41

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1.5x scale

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.