Home / 279,347.07-385,507.65-158,493.45

Finding the Fourth Proportional to 279,347.07, 385,507.65 and 158,493.45

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Solution

The fourth proportional to 279,347.07, 385,507.65 and 158,493.45 is: 218,725.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,347.07 : 385,507.65 = 158,493.45 : x
  2. Step 2: Convert to fraction form
    279,347.07/385,507.65 = 158,493.45/x
  3. Step 3: Cross multiply
    279,347.07x = 385,507.65 × 158,493.45
  4. Step 4: Simplify right side
    279,347.07x = 61,100,437,449.89
  5. Step 5: Solve for x
    x = 61,100,437,449.89/279,347.07
  6. Step 6: Final answer
    x = 218,725.89

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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.