Home / 457,632.15-686,440.86-142,089.36

Finding the Fourth Proportional to 457,632.15, 686,440.86 and 142,089.36

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Solution

The fourth proportional to 457,632.15, 686,440.86 and 142,089.36 is: 213,131.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,632.15 : 686,440.86 = 142,089.36 : x
  2. Step 2: Convert to fraction form
    457,632.15/686,440.86 = 142,089.36/x
  3. Step 3: Cross multiply
    457,632.15x = 686,440.86 × 142,089.36
  4. Step 4: Simplify right side
    457,632.15x = 97,535,942,475.25
  5. Step 5: Solve for x
    x = 97,535,942,475.25/457,632.15
  6. Step 6: Final answer
    x = 213,131.75

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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.