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Finding the Fourth Proportional to 315,682.40, 473,005.20 and 262,805.60

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Solution

The fourth proportional to 315,682.40, 473,005.20 and 262,805.60 is: 393,776.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,682.40 : 473,005.20 = 262,805.60 : x
  2. Step 2: Convert to fraction form
    315,682.40/473,005.20 = 262,805.60/x
  3. Step 3: Cross multiply
    315,682.40x = 473,005.20 × 262,805.60
  4. Step 4: Simplify right side
    315,682.40x = 124,308,415,389.12
  5. Step 5: Solve for x
    x = 124,308,415,389.12/315,682.40
  6. Step 6: Final answer
    x = 393,776.83

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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.