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Finding the Fourth Proportional to 318,398.73, 439,088.67 and 203,713.67

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Solution

The fourth proportional to 318,398.73, 439,088.67 and 203,713.67 is: 280,931.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,398.73 : 439,088.67 = 203,713.67 : x
  2. Step 2: Convert to fraction form
    318,398.73/439,088.67 = 203,713.67/x
  3. Step 3: Cross multiply
    318,398.73x = 439,088.67 × 203,713.67
  4. Step 4: Simplify right side
    318,398.73x = 89,448,362,225.68
  5. Step 5: Solve for x
    x = 89,448,362,225.68/318,398.73
  6. Step 6: Final answer
    x = 280,931.91

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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.