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Finding the Fourth Proportional to 258,756.16, 388,129.32 and 141,176.08

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Solution

The fourth proportional to 258,756.16, 388,129.32 and 141,176.08 is: 211,761.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,756.16 : 388,129.32 = 141,176.08 : x
  2. Step 2: Convert to fraction form
    258,756.16/388,129.32 = 141,176.08/x
  3. Step 3: Cross multiply
    258,756.16x = 388,129.32 × 141,176.08
  4. Step 4: Simplify right side
    258,756.16x = 54,794,575,930.67
  5. Step 5: Solve for x
    x = 54,794,575,930.67/258,756.16
  6. Step 6: Final answer
    x = 211,761.44

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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.