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Finding the Fourth Proportional to 210,281.76, 315,458.28 and 91,950.48

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Solution

The fourth proportional to 210,281.76, 315,458.28 and 91,950.48 is: 137,941.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,281.76 : 315,458.28 = 91,950.48 : x
  2. Step 2: Convert to fraction form
    210,281.76/315,458.28 = 91,950.48/x
  3. Step 3: Cross multiply
    210,281.76x = 315,458.28 × 91,950.48
  4. Step 4: Simplify right side
    210,281.76x = 29,006,540,265.97
  5. Step 5: Solve for x
    x = 29,006,540,265.97/210,281.76
  6. Step 6: Final answer
    x = 137,941.30

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1.5x scale

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.