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Finding the Fourth Proportional to 310,630.50, 427,612.23 and 229,905.90

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Solution

The fourth proportional to 310,630.50, 427,612.23 and 229,905.90 is: 316,487.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,630.50 : 427,612.23 = 229,905.90 : x
  2. Step 2: Convert to fraction form
    310,630.50/427,612.23 = 229,905.90/x
  3. Step 3: Cross multiply
    310,630.50x = 427,612.23 × 229,905.90
  4. Step 4: Simplify right side
    310,630.50x = 98,310,574,589.16
  5. Step 5: Solve for x
    x = 98,310,574,589.16/310,630.50
  6. Step 6: Final answer
    x = 316,487.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.