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Finding the Fourth Proportional to 326,313.96, 489,412.54 and 207,632.76

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Solution

The fourth proportional to 326,313.96, 489,412.54 and 207,632.76 is: 311,411.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,313.96 : 489,412.54 = 207,632.76 : x
  2. Step 2: Convert to fraction form
    326,313.96/489,412.54 = 207,632.76/x
  3. Step 3: Cross multiply
    326,313.96x = 489,412.54 × 207,632.76
  4. Step 4: Simplify right side
    326,313.96x = 101,618,076,458.81
  5. Step 5: Solve for x
    x = 101,618,076,458.81/326,313.96
  6. Step 6: Final answer
    x = 311,411.98

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1.5x scale

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.