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Finding the Fourth Proportional to 248,547.21, 342,999.14 and 135,369.96

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Solution

The fourth proportional to 248,547.21, 342,999.14 and 135,369.96 is: 186,812.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,547.21 : 342,999.14 = 135,369.96 : x
  2. Step 2: Convert to fraction form
    248,547.21/342,999.14 = 135,369.96/x
  3. Step 3: Cross multiply
    248,547.21x = 342,999.14 × 135,369.96
  4. Step 4: Simplify right side
    248,547.21x = 46,431,779,184.98
  5. Step 5: Solve for x
    x = 46,431,779,184.98/248,547.21
  6. Step 6: Final answer
    x = 186,812.72

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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.