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Finding the Fourth Proportional to 377,814.78, 521,215.71 and 255,267.60

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Solution

The fourth proportional to 377,814.78, 521,215.71 and 255,267.60 is: 352,155.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,814.78 : 521,215.71 = 255,267.60 : x
  2. Step 2: Convert to fraction form
    377,814.78/521,215.71 = 255,267.60/x
  3. Step 3: Cross multiply
    377,814.78x = 521,215.71 × 255,267.60
  4. Step 4: Simplify right side
    377,814.78x = 133,049,483,374.00
  5. Step 5: Solve for x
    x = 133,049,483,374.00/377,814.78
  6. Step 6: Final answer
    x = 352,155.32

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1.5x scale

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.