Home / 457,587.12-686,271.36-158,078.40

Finding the Fourth Proportional to 457,587.12, 686,271.36 and 158,078.40

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Solution

The fourth proportional to 457,587.12, 686,271.36 and 158,078.40 is: 237,079.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,587.12 : 686,271.36 = 158,078.40 : x
  2. Step 2: Convert to fraction form
    457,587.12/686,271.36 = 158,078.40/x
  3. Step 3: Cross multiply
    457,587.12x = 686,271.36 × 158,078.40
  4. Step 4: Simplify right side
    457,587.12x = 108,484,678,554.62
  5. Step 5: Solve for x
    x = 108,484,678,554.62/457,587.12
  6. Step 6: Final answer
    x = 237,079.83

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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.