Home / 382,939.43-528,435.65-210,823.74

Finding the Fourth Proportional to 382,939.43, 528,435.65 and 210,823.74

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Solution

The fourth proportional to 382,939.43, 528,435.65 and 210,823.74 is: 290,925.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,939.43 : 528,435.65 = 210,823.74 : x
  2. Step 2: Convert to fraction form
    382,939.43/528,435.65 = 210,823.74/x
  3. Step 3: Cross multiply
    382,939.43x = 528,435.65 × 210,823.74
  4. Step 4: Simplify right side
    382,939.43x = 111,406,779,028.21
  5. Step 5: Solve for x
    x = 111,406,779,028.21/382,939.43
  6. Step 6: Final answer
    x = 290,925.33

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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.