Home / 438,112.16-604,316.40-287,218.88

Finding the Fourth Proportional to 438,112.16, 604,316.40 and 287,218.88

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Solution

The fourth proportional to 438,112.16, 604,316.40 and 287,218.88 is: 396,179.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,112.16 : 604,316.40 = 287,218.88 : x
  2. Step 2: Convert to fraction form
    438,112.16/604,316.40 = 287,218.88/x
  3. Step 3: Cross multiply
    438,112.16x = 604,316.40 × 287,218.88
  4. Step 4: Simplify right side
    438,112.16x = 173,571,079,573.63
  5. Step 5: Solve for x
    x = 173,571,079,573.63/438,112.16
  6. Step 6: Final answer
    x = 396,179.55

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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.