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Finding the Fourth Proportional to 385,879.12, 579,016.06 and 183,703.66

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Solution

The fourth proportional to 385,879.12, 579,016.06 and 183,703.66 is: 275,649.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,879.12 : 579,016.06 = 183,703.66 : x
  2. Step 2: Convert to fraction form
    385,879.12/579,016.06 = 183,703.66/x
  3. Step 3: Cross multiply
    385,879.12x = 579,016.06 × 183,703.66
  4. Step 4: Simplify right side
    385,879.12x = 106,367,369,420.78
  5. Step 5: Solve for x
    x = 106,367,369,420.78/385,879.12
  6. Step 6: Final answer
    x = 275,649.46

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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.