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Finding the Fourth Proportional to 311,918.40, 467,877.60 and 292,235.40

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Solution

The fourth proportional to 311,918.40, 467,877.60 and 292,235.40 is: 438,353.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,918.40 : 467,877.60 = 292,235.40 : x
  2. Step 2: Convert to fraction form
    311,918.40/467,877.60 = 292,235.40/x
  3. Step 3: Cross multiply
    311,918.40x = 467,877.60 × 292,235.40
  4. Step 4: Simplify right side
    311,918.40x = 136,730,397,587.04
  5. Step 5: Solve for x
    x = 136,730,397,587.04/311,918.40
  6. Step 6: Final answer
    x = 438,353.10

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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.