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Finding the Fourth Proportional to 519,321.40, 778,836.30 and 164,444.20

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Solution

The fourth proportional to 519,321.40, 778,836.30 and 164,444.20 is: 246,620.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,321.40 : 778,836.30 = 164,444.20 : x
  2. Step 2: Convert to fraction form
    519,321.40/778,836.30 = 164,444.20/x
  3. Step 3: Cross multiply
    519,321.40x = 778,836.30 × 164,444.20
  4. Step 4: Simplify right side
    519,321.40x = 128,075,112,284.46
  5. Step 5: Solve for x
    x = 128,075,112,284.46/519,321.40
  6. Step 6: Final answer
    x = 246,620.13

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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.