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Finding the Fourth Proportional to 303,612.80, 455,419.20 and 93,250.40

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Solution

The fourth proportional to 303,612.80, 455,419.20 and 93,250.40 is: 139,875.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,612.80 : 455,419.20 = 93,250.40 : x
  2. Step 2: Convert to fraction form
    303,612.80/455,419.20 = 93,250.40/x
  3. Step 3: Cross multiply
    303,612.80x = 455,419.20 × 93,250.40
  4. Step 4: Simplify right side
    303,612.80x = 42,468,022,567.68
  5. Step 5: Solve for x
    x = 42,468,022,567.68/303,612.80
  6. Step 6: Final answer
    x = 139,875.60

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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.