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Finding the Fourth Proportional to 658,281.81, 908,423.64 and 356,475.81

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Solution

The fourth proportional to 658,281.81, 908,423.64 and 356,475.81 is: 491,933.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,281.81 : 908,423.64 = 356,475.81 : x
  2. Step 2: Convert to fraction form
    658,281.81/908,423.64 = 356,475.81/x
  3. Step 3: Cross multiply
    658,281.81x = 908,423.64 × 356,475.81
  4. Step 4: Simplify right side
    658,281.81x = 323,831,052,892.15
  5. Step 5: Solve for x
    x = 323,831,052,892.15/658,281.81
  6. Step 6: Final answer
    x = 491,933.77

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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.