Home / 457,631.90-686,440.49-142,089.11

Finding the Fourth Proportional to 457,631.90, 686,440.49 and 142,089.11

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Solution

The fourth proportional to 457,631.90, 686,440.49 and 142,089.11 is: 213,131.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,631.90 : 686,440.49 = 142,089.11 : x
  2. Step 2: Convert to fraction form
    457,631.90/686,440.49 = 142,089.11/x
  3. Step 3: Cross multiply
    457,631.90x = 686,440.49 × 142,089.11
  4. Step 4: Simplify right side
    457,631.90x = 97,535,718,292.06
  5. Step 5: Solve for x
    x = 97,535,718,292.06/457,631.90
  6. Step 6: Final answer
    x = 213,131.38

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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.