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Finding the Fourth Proportional to 315,670.83, 473,576.21 and 91,013.74

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Solution

The fourth proportional to 315,670.83, 473,576.21 and 91,013.74 is: 136,540.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,670.83 : 473,576.21 = 91,013.74 : x
  2. Step 2: Convert to fraction form
    315,670.83/473,576.21 = 91,013.74/x
  3. Step 3: Cross multiply
    315,670.83x = 473,576.21 × 91,013.74
  4. Step 4: Simplify right side
    315,670.83x = 43,101,939,679.24
  5. Step 5: Solve for x
    x = 43,101,939,679.24/315,670.83
  6. Step 6: Final answer
    x = 136,540.77

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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.