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Finding the Fourth Proportional to 315,775.80, 473,642.10 and 102,540.60

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Solution

The fourth proportional to 315,775.80, 473,642.10 and 102,540.60 is: 153,803.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,775.80 : 473,642.10 = 102,540.60 : x
  2. Step 2: Convert to fraction form
    315,775.80/473,642.10 = 102,540.60/x
  3. Step 3: Cross multiply
    315,775.80x = 473,642.10 × 102,540.60
  4. Step 4: Simplify right side
    315,775.80x = 48,567,545,119.26
  5. Step 5: Solve for x
    x = 48,567,545,119.26/315,775.80
  6. Step 6: Final answer
    x = 153,803.89

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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.