Home / 402,345.80-555,228.27-218,579.61

Finding the Fourth Proportional to 402,345.80, 555,228.27 and 218,579.61

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Solution

The fourth proportional to 402,345.80, 555,228.27 and 218,579.61 is: 301,635.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,345.80 : 555,228.27 = 218,579.61 : x
  2. Step 2: Convert to fraction form
    402,345.80/555,228.27 = 218,579.61/x
  3. Step 3: Cross multiply
    402,345.80x = 555,228.27 × 218,579.61
  4. Step 4: Simplify right side
    402,345.80x = 121,361,578,717.58
  5. Step 5: Solve for x
    x = 121,361,578,717.58/402,345.80
  6. Step 6: Final answer
    x = 301,635.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.