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Finding the Fourth Proportional to 565,240.10, 779,719.90 and 358,129.58

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Solution

The fourth proportional to 565,240.10, 779,719.90 and 358,129.58 is: 494,021.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,240.10 : 779,719.90 = 358,129.58 : x
  2. Step 2: Convert to fraction form
    565,240.10/779,719.90 = 358,129.58/x
  3. Step 3: Cross multiply
    565,240.10x = 779,719.90 × 358,129.58
  4. Step 4: Simplify right side
    565,240.10x = 279,240,760,304.64
  5. Step 5: Solve for x
    x = 279,240,760,304.64/565,240.10
  6. Step 6: Final answer
    x = 494,021.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.