Home / 257,077.28-385,611.80-70,088.78

Finding the Fourth Proportional to 257,077.28, 385,611.80 and 70,088.78

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Solution

The fourth proportional to 257,077.28, 385,611.80 and 70,088.78 is: 105,132.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,077.28 : 385,611.80 = 70,088.78 : x
  2. Step 2: Convert to fraction form
    257,077.28/385,611.80 = 70,088.78/x
  3. Step 3: Cross multiply
    257,077.28x = 385,611.80 × 70,088.78
  4. Step 4: Simplify right side
    257,077.28x = 27,027,061,229.19
  5. Step 5: Solve for x
    x = 27,027,061,229.19/257,077.28
  6. Step 6: Final answer
    x = 105,132.05

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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.