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Finding the Fourth Proportional to 315,744.72, 473,617.08 and 128,770.80

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Solution

The fourth proportional to 315,744.72, 473,617.08 and 128,770.80 is: 193,156.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,744.72 : 473,617.08 = 128,770.80 : x
  2. Step 2: Convert to fraction form
    315,744.72/473,617.08 = 128,770.80/x
  3. Step 3: Cross multiply
    315,744.72x = 473,617.08 × 128,770.80
  4. Step 4: Simplify right side
    315,744.72x = 60,988,050,285.26
  5. Step 5: Solve for x
    x = 60,988,050,285.26/315,744.72
  6. Step 6: Final answer
    x = 193,156.20

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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.