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Finding the Fourth Proportional to 317,667.76, 438,296.07 and 188,498.98

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Solution

The fourth proportional to 317,667.76, 438,296.07 and 188,498.98 is: 260,077.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,667.76 : 438,296.07 = 188,498.98 : x
  2. Step 2: Convert to fraction form
    317,667.76/438,296.07 = 188,498.98/x
  3. Step 3: Cross multiply
    317,667.76x = 438,296.07 × 188,498.98
  4. Step 4: Simplify right side
    317,667.76x = 82,618,362,133.01
  5. Step 5: Solve for x
    x = 82,618,362,133.01/317,667.76
  6. Step 6: Final answer
    x = 260,077.89

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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.