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Finding the Fourth Proportional to 328,085.40, 492,128.10 and 194,897.10

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Solution

The fourth proportional to 328,085.40, 492,128.10 and 194,897.10 is: 292,345.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,085.40 : 492,128.10 = 194,897.10 : x
  2. Step 2: Convert to fraction form
    328,085.40/492,128.10 = 194,897.10/x
  3. Step 3: Cross multiply
    328,085.40x = 492,128.10 × 194,897.10
  4. Step 4: Simplify right side
    328,085.40x = 95,914,339,518.51
  5. Step 5: Solve for x
    x = 95,914,339,518.51/328,085.40
  6. Step 6: Final answer
    x = 292,345.65

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Similar ratio
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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.