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Finding the Fourth Proportional to 610,622.55, 915,769.80 and 255,563.10

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Solution

The fourth proportional to 610,622.55, 915,769.80 and 255,563.10 is: 383,276.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,622.55 : 915,769.80 = 255,563.10 : x
  2. Step 2: Convert to fraction form
    610,622.55/915,769.80 = 255,563.10/x
  3. Step 3: Cross multiply
    610,622.55x = 915,769.80 × 255,563.10
  4. Step 4: Simplify right side
    610,622.55x = 234,036,968,974.38
  5. Step 5: Solve for x
    x = 234,036,968,974.38/610,622.55
  6. Step 6: Final answer
    x = 383,276.00

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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.