Home / 208,403.30-287,601.96-127,784.40

Finding the Fourth Proportional to 208,403.30, 287,601.96 and 127,784.40

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Solution

The fourth proportional to 208,403.30, 287,601.96 and 127,784.40 is: 176,345.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,403.30 : 287,601.96 = 127,784.40 : x
  2. Step 2: Convert to fraction form
    208,403.30/287,601.96 = 127,784.40/x
  3. Step 3: Cross multiply
    208,403.30x = 287,601.96 × 127,784.40
  4. Step 4: Simplify right side
    208,403.30x = 36,751,043,897.42
  5. Step 5: Solve for x
    x = 36,751,043,897.42/208,403.30
  6. Step 6: Final answer
    x = 176,345.79

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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.