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Finding the Fourth Proportional to 463,897.28, 640,118.49 and 272,840.96

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Solution

The fourth proportional to 463,897.28, 640,118.49 and 272,840.96 is: 376,485.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,897.28 : 640,118.49 = 272,840.96 : x
  2. Step 2: Convert to fraction form
    463,897.28/640,118.49 = 272,840.96/x
  3. Step 3: Cross multiply
    463,897.28x = 640,118.49 × 272,840.96
  4. Step 4: Simplify right side
    463,897.28x = 174,650,543,325.35
  5. Step 5: Solve for x
    x = 174,650,543,325.35/463,897.28
  6. Step 6: Final answer
    x = 376,485.38

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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.