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Finding the Fourth Proportional to 463,915.60, 640,192.68 and 272,941.28

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Solution

The fourth proportional to 463,915.60, 640,192.68 and 272,941.28 is: 376,652.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,915.60 : 640,192.68 = 272,941.28 : x
  2. Step 2: Convert to fraction form
    463,915.60/640,192.68 = 272,941.28/x
  3. Step 3: Cross multiply
    463,915.60x = 640,192.68 × 272,941.28
  4. Step 4: Simplify right side
    463,915.60x = 174,735,009,525.83
  5. Step 5: Solve for x
    x = 174,735,009,525.83/463,915.60
  6. Step 6: Final answer
    x = 376,652.58

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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.