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Finding the Fourth Proportional to 312,051, 430,631.46 and 168,811.72

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Solution

The fourth proportional to 312,051, 430,631.46 and 168,811.72 is: 232,960.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,051 : 430,631.46 = 168,811.72 : x
  2. Step 2: Convert to fraction form
    312,051/430,631.46 = 168,811.72/x
  3. Step 3: Cross multiply
    312,051x = 430,631.46 × 168,811.72
  4. Step 4: Simplify right side
    312,051x = 72,695,637,448.71
  5. Step 5: Solve for x
    x = 72,695,637,448.71/312,051
  6. Step 6: Final answer
    x = 232,960.76

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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.