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Finding the Fourth Proportional to 281,703.83, 388,751.62 and 152,642.21

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Solution

The fourth proportional to 281,703.83, 388,751.62 and 152,642.21 is: 210,646.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,703.83 : 388,751.62 = 152,642.21 : x
  2. Step 2: Convert to fraction form
    281,703.83/388,751.62 = 152,642.21/x
  3. Step 3: Cross multiply
    281,703.83x = 388,751.62 × 152,642.21
  4. Step 4: Simplify right side
    281,703.83x = 59,339,906,417.88
  5. Step 5: Solve for x
    x = 59,339,906,417.88/281,703.83
  6. Step 6: Final answer
    x = 210,646.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.