Home / 457,623.80-686,565.30-142,112.60

Finding the Fourth Proportional to 457,623.80, 686,565.30 and 142,112.60

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Solution

The fourth proportional to 457,623.80, 686,565.30 and 142,112.60 is: 213,209.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,623.80 : 686,565.30 = 142,112.60 : x
  2. Step 2: Convert to fraction form
    457,623.80/686,565.30 = 142,112.60/x
  3. Step 3: Cross multiply
    457,623.80x = 686,565.30 × 142,112.60
  4. Step 4: Simplify right side
    457,623.80x = 97,569,579,852.78
  5. Step 5: Solve for x
    x = 97,569,579,852.78/457,623.80
  6. Step 6: Final answer
    x = 213,209.15

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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.