Home / 402,105.12-554,888.44-218,336.51

Finding the Fourth Proportional to 402,105.12, 554,888.44 and 218,336.51

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Solution

The fourth proportional to 402,105.12, 554,888.44 and 218,336.51 is: 301,295.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,105.12 : 554,888.44 = 218,336.51 : x
  2. Step 2: Convert to fraction form
    402,105.12/554,888.44 = 218,336.51/x
  3. Step 3: Cross multiply
    402,105.12x = 554,888.44 × 218,336.51
  4. Step 4: Simplify right side
    402,105.12x = 121,152,403,347.41
  5. Step 5: Solve for x
    x = 121,152,403,347.41/402,105.12
  6. Step 6: Final answer
    x = 301,295.35

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1.5x scale

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.