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Finding the Fourth Proportional to 519,343.53, 779,128.29 and 164,360.63

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Solution

The fourth proportional to 519,343.53, 779,128.29 and 164,360.63 is: 246,576.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,343.53 : 779,128.29 = 164,360.63 : x
  2. Step 2: Convert to fraction form
    519,343.53/779,128.29 = 164,360.63/x
  3. Step 3: Cross multiply
    519,343.53x = 779,128.29 × 164,360.63
  4. Step 4: Simplify right side
    519,343.53x = 128,058,012,699.58
  5. Step 5: Solve for x
    x = 128,058,012,699.58/519,343.53
  6. Step 6: Final answer
    x = 246,576.70

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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.