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Finding the Fourth Proportional to 210,074.60, 315,419.10 and 148,020.20

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Solution

The fourth proportional to 210,074.60, 315,419.10 and 148,020.20 is: 222,246.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,074.60 : 315,419.10 = 148,020.20 : x
  2. Step 2: Convert to fraction form
    210,074.60/315,419.10 = 148,020.20/x
  3. Step 3: Cross multiply
    210,074.60x = 315,419.10 × 148,020.20
  4. Step 4: Simplify right side
    210,074.60x = 46,688,398,265.82
  5. Step 5: Solve for x
    x = 46,688,398,265.82/210,074.60
  6. Step 6: Final answer
    x = 222,246.76

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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.