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Finding the Fourth Proportional to 421,913.03, 632,798.16 and 118,237.29

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Solution

The fourth proportional to 421,913.03, 632,798.16 and 118,237.29 is: 177,335.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,913.03 : 632,798.16 = 118,237.29 : x
  2. Step 2: Convert to fraction form
    421,913.03/632,798.16 = 118,237.29/x
  3. Step 3: Cross multiply
    421,913.03x = 632,798.16 × 118,237.29
  4. Step 4: Simplify right side
    421,913.03x = 74,820,339,555.39
  5. Step 5: Solve for x
    x = 74,820,339,555.39/421,913.03
  6. Step 6: Final answer
    x = 177,335.93

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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.