Home / 457,663.40-686,546.30-142,117.80

Finding the Fourth Proportional to 457,663.40, 686,546.30 and 142,117.80

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Solution

The fourth proportional to 457,663.40, 686,546.30 and 142,117.80 is: 213,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,663.40 : 686,546.30 = 142,117.80 : x
  2. Step 2: Convert to fraction form
    457,663.40/686,546.30 = 142,117.80/x
  3. Step 3: Cross multiply
    457,663.40x = 686,546.30 × 142,117.80
  4. Step 4: Simplify right side
    457,663.40x = 97,570,449,754.14
  5. Step 5: Solve for x
    x = 97,570,449,754.14/457,663.40
  6. Step 6: Final answer
    x = 213,192.60

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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.