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Finding the Fourth Proportional to 210,254.40, 315,475.20 and 110,390.40

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Solution

The fourth proportional to 210,254.40, 315,475.20 and 110,390.40 is: 165,634.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,254.40 : 315,475.20 = 110,390.40 : x
  2. Step 2: Convert to fraction form
    210,254.40/315,475.20 = 110,390.40/x
  3. Step 3: Cross multiply
    210,254.40x = 315,475.20 × 110,390.40
  4. Step 4: Simplify right side
    210,254.40x = 34,825,433,518.08
  5. Step 5: Solve for x
    x = 34,825,433,518.08/210,254.40
  6. Step 6: Final answer
    x = 165,634.74

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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.