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Finding the Fourth Proportional to 395,859, 546,319.98 and 217,045.56

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Solution

The fourth proportional to 395,859, 546,319.98 and 217,045.56 is: 299,541.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,859 : 546,319.98 = 217,045.56 : x
  2. Step 2: Convert to fraction form
    395,859/546,319.98 = 217,045.56/x
  3. Step 3: Cross multiply
    395,859x = 546,319.98 × 217,045.56
  4. Step 4: Simplify right side
    395,859x = 118,576,325,998.29
  5. Step 5: Solve for x
    x = 118,576,325,998.29/395,859
  6. Step 6: Final answer
    x = 299,541.82

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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.