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Finding the Fourth Proportional to 400,043.70, 551,800.16 and 256,576.50

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Solution

The fourth proportional to 400,043.70, 551,800.16 and 256,576.50 is: 353,908.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,043.70 : 551,800.16 = 256,576.50 : x
  2. Step 2: Convert to fraction form
    400,043.70/551,800.16 = 256,576.50/x
  3. Step 3: Cross multiply
    400,043.70x = 551,800.16 × 256,576.50
  4. Step 4: Simplify right side
    400,043.70x = 141,578,953,752.24
  5. Step 5: Solve for x
    x = 141,578,953,752.24/400,043.70
  6. Step 6: Final answer
    x = 353,908.72

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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.