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Finding the Fourth Proportional to 421,650.99, 632,561.13 and 155,412.90

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Solution

The fourth proportional to 421,650.99, 632,561.13 and 155,412.90 is: 233,150.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,650.99 : 632,561.13 = 155,412.90 : x
  2. Step 2: Convert to fraction form
    421,650.99/632,561.13 = 155,412.90/x
  3. Step 3: Cross multiply
    421,650.99x = 632,561.13 × 155,412.90
  4. Step 4: Simplify right side
    421,650.99x = 98,308,159,640.58
  5. Step 5: Solve for x
    x = 98,308,159,640.58/421,650.99
  6. Step 6: Final answer
    x = 233,150.55

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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.