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Finding the Fourth Proportional to 312,125.86, 430,730.62 and 168,882.76

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Solution

The fourth proportional to 312,125.86, 430,730.62 and 168,882.76 is: 233,056.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,125.86 : 430,730.62 = 168,882.76 : x
  2. Step 2: Convert to fraction form
    312,125.86/430,730.62 = 168,882.76/x
  3. Step 3: Cross multiply
    312,125.86x = 430,730.62 × 168,882.76
  4. Step 4: Simplify right side
    312,125.86x = 72,742,975,922.11
  5. Step 5: Solve for x
    x = 72,742,975,922.11/312,125.86
  6. Step 6: Final answer
    x = 233,056.55

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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.