Home / 420,734.38-631,331.19-243,587.38

Finding the Fourth Proportional to 420,734.38, 631,331.19 and 243,587.38

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Solution

The fourth proportional to 420,734.38, 631,331.19 and 243,587.38 is: 365,514.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,734.38 : 631,331.19 = 243,587.38 : x
  2. Step 2: Convert to fraction form
    420,734.38/631,331.19 = 243,587.38/x
  3. Step 3: Cross multiply
    420,734.38x = 631,331.19 × 243,587.38
  4. Step 4: Simplify right side
    420,734.38x = 153,784,310,484.38
  5. Step 5: Solve for x
    x = 153,784,310,484.38/420,734.38
  6. Step 6: Final answer
    x = 365,514.01

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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.