Home / 420,218.06-630,242.31-153,887.66

Finding the Fourth Proportional to 420,218.06, 630,242.31 and 153,887.66

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Solution

The fourth proportional to 420,218.06, 630,242.31 and 153,887.66 is: 230,800.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,218.06 : 630,242.31 = 153,887.66 : x
  2. Step 2: Convert to fraction form
    420,218.06/630,242.31 = 153,887.66/x
  3. Step 3: Cross multiply
    420,218.06x = 630,242.31 × 153,887.66
  4. Step 4: Simplify right side
    420,218.06x = 96,986,514,318.89
  5. Step 5: Solve for x
    x = 96,986,514,318.89/420,218.06
  6. Step 6: Final answer
    x = 230,800.44

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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.