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Finding the Fourth Proportional to 328,499.80, 492,749.70 and 141,875.80

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Solution

The fourth proportional to 328,499.80, 492,749.70 and 141,875.80 is: 212,813.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,499.80 : 492,749.70 = 141,875.80 : x
  2. Step 2: Convert to fraction form
    328,499.80/492,749.70 = 141,875.80/x
  3. Step 3: Cross multiply
    328,499.80x = 492,749.70 × 141,875.80
  4. Step 4: Simplify right side
    328,499.80x = 69,909,257,887.26
  5. Step 5: Solve for x
    x = 69,909,257,887.26/328,499.80
  6. Step 6: Final answer
    x = 212,813.70

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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.