Home / 457,632.40-686,441.24-142,089.61

Finding the Fourth Proportional to 457,632.40, 686,441.24 and 142,089.61

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Solution

The fourth proportional to 457,632.40, 686,441.24 and 142,089.61 is: 213,132.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,632.40 : 686,441.24 = 142,089.61 : x
  2. Step 2: Convert to fraction form
    457,632.40/686,441.24 = 142,089.61/x
  3. Step 3: Cross multiply
    457,632.40x = 686,441.24 × 142,089.61
  4. Step 4: Simplify right side
    457,632.40x = 97,536,168,079.52
  5. Step 5: Solve for x
    x = 97,536,168,079.52/457,632.40
  6. Step 6: Final answer
    x = 213,132.13

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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.