Home / 457,828.20-686,807.10-142,252.20

Finding the Fourth Proportional to 457,828.20, 686,807.10 and 142,252.20

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Solution

The fourth proportional to 457,828.20, 686,807.10 and 142,252.20 is: 213,398.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,828.20 : 686,807.10 = 142,252.20 : x
  2. Step 2: Convert to fraction form
    457,828.20/686,807.10 = 142,252.20/x
  3. Step 3: Cross multiply
    457,828.20x = 686,807.10 × 142,252.20
  4. Step 4: Simplify right side
    457,828.20x = 97,699,820,950.62
  5. Step 5: Solve for x
    x = 97,699,820,950.62/457,828.20
  6. Step 6: Final answer
    x = 213,398.43

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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.