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Finding the Fourth Proportional to 315,665.90, 473,523.45 and 105,303.84

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Solution

The fourth proportional to 315,665.90, 473,523.45 and 105,303.84 is: 157,963.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,665.90 : 473,523.45 = 105,303.84 : x
  2. Step 2: Convert to fraction form
    315,665.90/473,523.45 = 105,303.84/x
  3. Step 3: Cross multiply
    315,665.90x = 473,523.45 × 105,303.84
  4. Step 4: Simplify right side
    315,665.90x = 49,863,837,615.05
  5. Step 5: Solve for x
    x = 49,863,837,615.05/315,665.90
  6. Step 6: Final answer
    x = 157,963.97

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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.