Home / 309,817.72-427,547.26-173,851.35

Finding the Fourth Proportional to 309,817.72, 427,547.26 and 173,851.35

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Solution

The fourth proportional to 309,817.72, 427,547.26 and 173,851.35 is: 239,914.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,817.72 : 427,547.26 = 173,851.35 : x
  2. Step 2: Convert to fraction form
    309,817.72/427,547.26 = 173,851.35/x
  3. Step 3: Cross multiply
    309,817.72x = 427,547.26 × 173,851.35
  4. Step 4: Simplify right side
    309,817.72x = 74,329,668,339.80
  5. Step 5: Solve for x
    x = 74,329,668,339.80/309,817.72
  6. Step 6: Final answer
    x = 239,914.19

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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.