Home / 257,056.47-385,601.04-79,548.57

Finding the Fourth Proportional to 257,056.47, 385,601.04 and 79,548.57

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Solution

The fourth proportional to 257,056.47, 385,601.04 and 79,548.57 is: 119,327.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,056.47 : 385,601.04 = 79,548.57 : x
  2. Step 2: Convert to fraction form
    257,056.47/385,601.04 = 79,548.57/x
  3. Step 3: Cross multiply
    257,056.47x = 385,601.04 × 79,548.57
  4. Step 4: Simplify right side
    257,056.47x = 30,674,011,322.51
  5. Step 5: Solve for x
    x = 30,674,011,322.51/257,056.47
  6. Step 6: Final answer
    x = 119,327.91

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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.