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Finding the Fourth Proportional to 492,326.40, 738,052.20 and 292,434.60

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Solution

The fourth proportional to 492,326.40, 738,052.20 and 292,434.60 is: 438,392.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,326.40 : 738,052.20 = 292,434.60 : x
  2. Step 2: Convert to fraction form
    492,326.40/738,052.20 = 292,434.60/x
  3. Step 3: Cross multiply
    492,326.40x = 738,052.20 × 292,434.60
  4. Step 4: Simplify right side
    492,326.40x = 215,831,999,886.12
  5. Step 5: Solve for x
    x = 215,831,999,886.12/492,326.40
  6. Step 6: Final answer
    x = 438,392.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.