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Finding the Fourth Proportional to 519,435.38, 779,075.12 and 164,403.38

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Solution

The fourth proportional to 519,435.38, 779,075.12 and 164,403.38 is: 246,580.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,435.38 : 779,075.12 = 164,403.38 : x
  2. Step 2: Convert to fraction form
    519,435.38/779,075.12 = 164,403.38/x
  3. Step 3: Cross multiply
    519,435.38x = 779,075.12 × 164,403.38
  4. Step 4: Simplify right side
    519,435.38x = 128,082,583,001.91
  5. Step 5: Solve for x
    x = 128,082,583,001.91/519,435.38
  6. Step 6: Final answer
    x = 246,580.40

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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.