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Finding the Fourth Proportional to 310,540.20, 465,810.30 and 210,156.90

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Solution

The fourth proportional to 310,540.20, 465,810.30 and 210,156.90 is: 315,235.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,540.20 : 465,810.30 = 210,156.90 : x
  2. Step 2: Convert to fraction form
    310,540.20/465,810.30 = 210,156.90/x
  3. Step 3: Cross multiply
    310,540.20x = 465,810.30 × 210,156.90
  4. Step 4: Simplify right side
    310,540.20x = 97,893,248,636.07
  5. Step 5: Solve for x
    x = 97,893,248,636.07/310,540.20
  6. Step 6: Final answer
    x = 315,235.35

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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.