Home / 305,889.07-458,315.80-187,312.76

Finding the Fourth Proportional to 305,889.07, 458,315.80 and 187,312.76

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Solution

The fourth proportional to 305,889.07, 458,315.80 and 187,312.76 is: 280,652.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,889.07 : 458,315.80 = 187,312.76 : x
  2. Step 2: Convert to fraction form
    305,889.07/458,315.80 = 187,312.76/x
  3. Step 3: Cross multiply
    305,889.07x = 458,315.80 × 187,312.76
  4. Step 4: Simplify right side
    305,889.07x = 85,848,397,449.61
  5. Step 5: Solve for x
    x = 85,848,397,449.61/305,889.07
  6. Step 6: Final answer
    x = 280,652.06

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1.5x scale

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.