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Finding the Fourth Proportional to 526,638.32, 790,039.40 and 171,569.68

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Solution

The fourth proportional to 526,638.32, 790,039.40 and 171,569.68 is: 257,381.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,638.32 : 790,039.40 = 171,569.68 : x
  2. Step 2: Convert to fraction form
    526,638.32/790,039.40 = 171,569.68/x
  3. Step 3: Cross multiply
    526,638.32x = 790,039.40 × 171,569.68
  4. Step 4: Simplify right side
    526,638.32x = 135,546,807,045.39
  5. Step 5: Solve for x
    x = 135,546,807,045.39/526,638.32
  6. Step 6: Final answer
    x = 257,381.21

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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.