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Finding the Fourth Proportional to 258,502.65, 388,045.58 and 199,599.45

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Solution

The fourth proportional to 258,502.65, 388,045.58 and 199,599.45 is: 299,624.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,502.65 : 388,045.58 = 199,599.45 : x
  2. Step 2: Convert to fraction form
    258,502.65/388,045.58 = 199,599.45/x
  3. Step 3: Cross multiply
    258,502.65x = 388,045.58 × 199,599.45
  4. Step 4: Simplify right side
    258,502.65x = 77,453,683,344.93
  5. Step 5: Solve for x
    x = 77,453,683,344.93/258,502.65
  6. Step 6: Final answer
    x = 299,624.33

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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.