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Finding the Fourth Proportional to 658,090.16, 908,160.32 and 356,282

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Solution

The fourth proportional to 658,090.16, 908,160.32 and 356,282 is: 491,666.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,090.16 : 908,160.32 = 356,282 : x
  2. Step 2: Convert to fraction form
    658,090.16/908,160.32 = 356,282/x
  3. Step 3: Cross multiply
    658,090.16x = 908,160.32 × 356,282
  4. Step 4: Simplify right side
    658,090.16x = 323,561,175,130.24
  5. Step 5: Solve for x
    x = 323,561,175,130.24/658,090.16
  6. Step 6: Final answer
    x = 491,666.94

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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.