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Finding the Fourth Proportional to 372,457.40, 558,829.46 and 172,879.80

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Solution

The fourth proportional to 372,457.40, 558,829.46 and 172,879.80 is: 259,386.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,457.40 : 558,829.46 = 172,879.80 : x
  2. Step 2: Convert to fraction form
    372,457.40/558,829.46 = 172,879.80/x
  3. Step 3: Cross multiply
    372,457.40x = 558,829.46 × 172,879.80
  4. Step 4: Simplify right side
    372,457.40x = 96,610,325,278.91
  5. Step 5: Solve for x
    x = 96,610,325,278.91/372,457.40
  6. Step 6: Final answer
    x = 259,386.24

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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.