Home / 457,812.20-686,783.10-142,236.20

Finding the Fourth Proportional to 457,812.20, 686,783.10 and 142,236.20

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Solution

The fourth proportional to 457,812.20, 686,783.10 and 142,236.20 is: 213,374.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,812.20 : 686,783.10 = 142,236.20 : x
  2. Step 2: Convert to fraction form
    457,812.20/686,783.10 = 142,236.20/x
  3. Step 3: Cross multiply
    457,812.20x = 686,783.10 × 142,236.20
  4. Step 4: Simplify right side
    457,812.20x = 97,685,418,368.22
  5. Step 5: Solve for x
    x = 97,685,418,368.22/457,812.20
  6. Step 6: Final answer
    x = 213,374.43

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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.