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Finding the Fourth Proportional to 529,258.28, 730,420.90 and 299,888.49

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Solution

The fourth proportional to 529,258.28, 730,420.90 and 299,888.49 is: 413,871.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,258.28 : 730,420.90 = 299,888.49 : x
  2. Step 2: Convert to fraction form
    529,258.28/730,420.90 = 299,888.49/x
  3. Step 3: Cross multiply
    529,258.28x = 730,420.90 × 299,888.49
  4. Step 4: Simplify right side
    529,258.28x = 219,044,820,765.44
  5. Step 5: Solve for x
    x = 219,044,820,765.44/529,258.28
  6. Step 6: Final answer
    x = 413,871.32

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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.