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Finding the Fourth Proportional to 368,624,758.32, 508,692,453.48 and 203,608,784.88

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Solution

The fourth proportional to 368,624,758.32, 508,692,453.48 and 203,608,784.88 is: 280,974,758.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,624,758.32 : 508,692,453.48 = 203,608,784.88 : x
  2. Step 2: Convert to fraction form
    368,624,758.32/508,692,453.48 = 203,608,784.88/x
  3. Step 3: Cross multiply
    368,624,758.32x = 508,692,453.48 × 203,608,784.88
  4. Step 4: Simplify right side
    368,624,758.32x = 103,574,252,330,688,736
  5. Step 5: Solve for x
    x = 103,574,252,330,688,736/368,624,758.32
  6. Step 6: Final answer
    x = 280,974,758.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.