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Finding the Fourth Proportional to 328,182.40, 492,273.60 and 78,864.40

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Solution

The fourth proportional to 328,182.40, 492,273.60 and 78,864.40 is: 118,296.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,182.40 : 492,273.60 = 78,864.40 : x
  2. Step 2: Convert to fraction form
    328,182.40/492,273.60 = 78,864.40/x
  3. Step 3: Cross multiply
    328,182.40x = 492,273.60 × 78,864.40
  4. Step 4: Simplify right side
    328,182.40x = 38,822,862,099.84
  5. Step 5: Solve for x
    x = 38,822,862,099.84/328,182.40
  6. Step 6: Final answer
    x = 118,296.60

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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.