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Finding the Fourth Proportional to 288,536.40, 432,804.60 and 164,120.40

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Solution

The fourth proportional to 288,536.40, 432,804.60 and 164,120.40 is: 246,180.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,536.40 : 432,804.60 = 164,120.40 : x
  2. Step 2: Convert to fraction form
    288,536.40/432,804.60 = 164,120.40/x
  3. Step 3: Cross multiply
    288,536.40x = 432,804.60 × 164,120.40
  4. Step 4: Simplify right side
    288,536.40x = 71,032,064,073.84
  5. Step 5: Solve for x
    x = 71,032,064,073.84/288,536.40
  6. Step 6: Final answer
    x = 246,180.60

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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.