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Finding the Fourth Proportional to 312,130.08, 430,745.04 and 176,191.20

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Solution

The fourth proportional to 312,130.08, 430,745.04 and 176,191.20 is: 243,146.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,130.08 : 430,745.04 = 176,191.20 : x
  2. Step 2: Convert to fraction form
    312,130.08/430,745.04 = 176,191.20/x
  3. Step 3: Cross multiply
    312,130.08x = 430,745.04 × 176,191.20
  4. Step 4: Simplify right side
    312,130.08x = 75,893,485,491.65
  5. Step 5: Solve for x
    x = 75,893,485,491.65/312,130.08
  6. Step 6: Final answer
    x = 243,146.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.