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Finding the Fourth Proportional to 369,407.99, 509,771.48 and 208,260.72

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Solution

The fourth proportional to 369,407.99, 509,771.48 and 208,260.72 is: 287,393.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,407.99 : 509,771.48 = 208,260.72 : x
  2. Step 2: Convert to fraction form
    369,407.99/509,771.48 = 208,260.72/x
  3. Step 3: Cross multiply
    369,407.99x = 509,771.48 × 208,260.72
  4. Step 4: Simplify right side
    369,407.99x = 106,165,374,418.96
  5. Step 5: Solve for x
    x = 106,165,374,418.96/369,407.99
  6. Step 6: Final answer
    x = 287,393.28

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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.