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Finding the Fourth Proportional to 312,948.30, 469,422.45 and 188,532.30

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Solution

The fourth proportional to 312,948.30, 469,422.45 and 188,532.30 is: 282,798.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,948.30 : 469,422.45 = 188,532.30 : x
  2. Step 2: Convert to fraction form
    312,948.30/469,422.45 = 188,532.30/x
  3. Step 3: Cross multiply
    312,948.30x = 469,422.45 × 188,532.30
  4. Step 4: Simplify right side
    312,948.30x = 88,501,294,170.14
  5. Step 5: Solve for x
    x = 88,501,294,170.14/312,948.30
  6. Step 6: Final answer
    x = 282,798.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.