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Finding the Fourth Proportional to 303,578.80, 455,368.20 and 93,216.40

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Solution

The fourth proportional to 303,578.80, 455,368.20 and 93,216.40 is: 139,824.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,578.80 : 455,368.20 = 93,216.40 : x
  2. Step 2: Convert to fraction form
    303,578.80/455,368.20 = 93,216.40/x
  3. Step 3: Cross multiply
    303,578.80x = 455,368.20 × 93,216.40
  4. Step 4: Simplify right side
    303,578.80x = 42,447,784,278.48
  5. Step 5: Solve for x
    x = 42,447,784,278.48/303,578.80
  6. Step 6: Final answer
    x = 139,824.60

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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.