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Finding the Fourth Proportional to 401,646.89, 602,490.35 and 131,751.05

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Solution

The fourth proportional to 401,646.89, 602,490.35 and 131,751.05 is: 197,633.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,646.89 : 602,490.35 = 131,751.05 : x
  2. Step 2: Convert to fraction form
    401,646.89/602,490.35 = 131,751.05/x
  3. Step 3: Cross multiply
    401,646.89x = 602,490.35 × 131,751.05
  4. Step 4: Simplify right side
    401,646.89x = 79,378,732,556.16
  5. Step 5: Solve for x
    x = 79,378,732,556.16/401,646.89
  6. Step 6: Final answer
    x = 197,633.13

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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.