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Finding the Fourth Proportional to 312,172.83, 430,798.50 and 168,932.86

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Solution

The fourth proportional to 312,172.83, 430,798.50 and 168,932.86 is: 233,127.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,172.83 : 430,798.50 = 168,932.86 : x
  2. Step 2: Convert to fraction form
    312,172.83/430,798.50 = 168,932.86/x
  3. Step 3: Cross multiply
    312,172.83x = 430,798.50 × 168,932.86
  4. Step 4: Simplify right side
    312,172.83x = 72,776,022,688.71
  5. Step 5: Solve for x
    x = 72,776,022,688.71/312,172.83
  6. Step 6: Final answer
    x = 233,127.35

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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.