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Finding the Fourth Proportional to 529,575.40, 730,830.18 and 303,207.40

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Solution

The fourth proportional to 529,575.40, 730,830.18 and 303,207.40 is: 418,435.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,575.40 : 730,830.18 = 303,207.40 : x
  2. Step 2: Convert to fraction form
    529,575.40/730,830.18 = 303,207.40/x
  3. Step 3: Cross multiply
    529,575.40x = 730,830.18 × 303,207.40
  4. Step 4: Simplify right side
    529,575.40x = 221,593,118,719.33
  5. Step 5: Solve for x
    x = 221,593,118,719.33/529,575.40
  6. Step 6: Final answer
    x = 418,435.45

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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.