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Finding the Fourth Proportional to 463,990.80, 640,276.98 and 272,967.28

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Solution

The fourth proportional to 463,990.80, 640,276.98 and 272,967.28 is: 376,677.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,990.80 : 640,276.98 = 272,967.28 : x
  2. Step 2: Convert to fraction form
    463,990.80/640,276.98 = 272,967.28/x
  3. Step 3: Cross multiply
    463,990.80x = 640,276.98 × 272,967.28
  4. Step 4: Simplify right side
    463,990.80x = 174,774,665,677.21
  5. Step 5: Solve for x
    x = 174,774,665,677.21/463,990.80
  6. Step 6: Final answer
    x = 376,677.01

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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.