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Finding the Fourth Proportional to 463,990.29, 640,276.29 and 272,966.78

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Solution

The fourth proportional to 463,990.29, 640,276.29 and 272,966.78 is: 376,676.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,990.29 : 640,276.29 = 272,966.78 : x
  2. Step 2: Convert to fraction form
    463,990.29/640,276.29 = 272,966.78/x
  3. Step 3: Cross multiply
    463,990.29x = 640,276.29 × 272,966.78
  4. Step 4: Simplify right side
    463,990.29x = 174,774,153,990.27
  5. Step 5: Solve for x
    x = 174,774,153,990.27/463,990.29
  6. Step 6: Final answer
    x = 376,676.32

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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.