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Finding the Fourth Proportional to 519,666.40, 779,523.90 and 164,708.20

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Solution

The fourth proportional to 519,666.40, 779,523.90 and 164,708.20 is: 247,070.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,666.40 : 779,523.90 = 164,708.20 : x
  2. Step 2: Convert to fraction form
    519,666.40/779,523.90 = 164,708.20/x
  3. Step 3: Cross multiply
    519,666.40x = 779,523.90 × 164,708.20
  4. Step 4: Simplify right side
    519,666.40x = 128,393,978,425.98
  5. Step 5: Solve for x
    x = 128,393,978,425.98/519,666.40
  6. Step 6: Final answer
    x = 247,070.00

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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.