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Finding the Fourth Proportional to 421,573.55, 632,609.46 and 155,520.95

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Solution

The fourth proportional to 421,573.55, 632,609.46 and 155,520.95 is: 233,373.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,573.55 : 632,609.46 = 155,520.95 : x
  2. Step 2: Convert to fraction form
    421,573.55/632,609.46 = 155,520.95/x
  3. Step 3: Cross multiply
    421,573.55x = 632,609.46 × 155,520.95
  4. Step 4: Simplify right side
    421,573.55x = 98,384,021,035.14
  5. Step 5: Solve for x
    x = 98,384,021,035.14/421,573.55
  6. Step 6: Final answer
    x = 233,373.33

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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.