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Finding the Fourth Proportional to 309,636.26, 427,263.88 and 173,642.22

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Solution

The fourth proportional to 309,636.26, 427,263.88 and 173,642.22 is: 239,607.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,636.26 : 427,263.88 = 173,642.22 : x
  2. Step 2: Convert to fraction form
    309,636.26/427,263.88 = 173,642.22/x
  3. Step 3: Cross multiply
    309,636.26x = 427,263.88 × 173,642.22
  4. Step 4: Simplify right side
    309,636.26x = 74,191,048,848.96
  5. Step 5: Solve for x
    x = 74,191,048,848.96/309,636.26
  6. Step 6: Final answer
    x = 239,607.11

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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.