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Finding the Fourth Proportional to 279,372.64, 385,533.12 and 152,048.20

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Solution

The fourth proportional to 279,372.64, 385,533.12 and 152,048.20 is: 209,825.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,372.64 : 385,533.12 = 152,048.20 : x
  2. Step 2: Convert to fraction form
    279,372.64/385,533.12 = 152,048.20/x
  3. Step 3: Cross multiply
    279,372.64x = 385,533.12 × 152,048.20
  4. Step 4: Simplify right side
    279,372.64x = 58,619,616,936.38
  5. Step 5: Solve for x
    x = 58,619,616,936.38/279,372.64
  6. Step 6: Final answer
    x = 209,825.90

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1.5x scale

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.