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Finding the Fourth Proportional to 328,187.07, 492,280.56 and 78,869.07

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Solution

The fourth proportional to 328,187.07, 492,280.56 and 78,869.07 is: 118,303.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,187.07 : 492,280.56 = 78,869.07 : x
  2. Step 2: Convert to fraction form
    328,187.07/492,280.56 = 78,869.07/x
  3. Step 3: Cross multiply
    328,187.07x = 492,280.56 × 78,869.07
  4. Step 4: Simplify right side
    328,187.07x = 38,825,709,946.28
  5. Step 5: Solve for x
    x = 38,825,709,946.28/328,187.07
  6. Step 6: Final answer
    x = 118,303.59

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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.