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Finding the Fourth Proportional to 455,937.60, 684,295.20 and 203,606.40

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Solution

The fourth proportional to 455,937.60, 684,295.20 and 203,606.40 is: 305,583.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,937.60 : 684,295.20 = 203,606.40 : x
  2. Step 2: Convert to fraction form
    455,937.60/684,295.20 = 203,606.40/x
  3. Step 3: Cross multiply
    455,937.60x = 684,295.20 × 203,606.40
  4. Step 4: Simplify right side
    455,937.60x = 139,326,882,209.28
  5. Step 5: Solve for x
    x = 139,326,882,209.28/455,937.60
  6. Step 6: Final answer
    x = 305,583.23

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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.