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Finding the Fourth Proportional to 288,925.56, 398,719.80 and 161,613

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Solution

The fourth proportional to 288,925.56, 398,719.80 and 161,613 is: 223,027.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,925.56 : 398,719.80 = 161,613 : x
  2. Step 2: Convert to fraction form
    288,925.56/398,719.80 = 161,613/x
  3. Step 3: Cross multiply
    288,925.56x = 398,719.80 × 161,613
  4. Step 4: Simplify right side
    288,925.56x = 64,438,303,037.40
  5. Step 5: Solve for x
    x = 64,438,303,037.40/288,925.56
  6. Step 6: Final answer
    x = 223,027.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.