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Finding the Fourth Proportional to 369,454.87, 509,840.51 and 208,306.79

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Solution

The fourth proportional to 369,454.87, 509,840.51 and 208,306.79 is: 287,459.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,454.87 : 509,840.51 = 208,306.79 : x
  2. Step 2: Convert to fraction form
    369,454.87/509,840.51 = 208,306.79/x
  3. Step 3: Cross multiply
    369,454.87x = 509,840.51 × 208,306.79
  4. Step 4: Simplify right side
    369,454.87x = 106,203,237,500.86
  5. Step 5: Solve for x
    x = 106,203,237,500.86/369,454.87
  6. Step 6: Final answer
    x = 287,459.30

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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.