Home / 420,659.24-630,988.86-223,621.16

Finding the Fourth Proportional to 420,659.24, 630,988.86 and 223,621.16

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Solution

The fourth proportional to 420,659.24, 630,988.86 and 223,621.16 is: 335,431.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,659.24 : 630,988.86 = 223,621.16 : x
  2. Step 2: Convert to fraction form
    420,659.24/630,988.86 = 223,621.16/x
  3. Step 3: Cross multiply
    420,659.24x = 630,988.86 × 223,621.16
  4. Step 4: Simplify right side
    420,659.24x = 141,102,460,820.28
  5. Step 5: Solve for x
    x = 141,102,460,820.28/420,659.24
  6. Step 6: Final answer
    x = 335,431.74

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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.