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Finding the Fourth Proportional to 290,808.63, 401,325.21 and 176,108.67

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Solution

The fourth proportional to 290,808.63, 401,325.21 and 176,108.67 is: 243,035.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,808.63 : 401,325.21 = 176,108.67 : x
  2. Step 2: Convert to fraction form
    290,808.63/401,325.21 = 176,108.67/x
  3. Step 3: Cross multiply
    290,808.63x = 401,325.21 × 176,108.67
  4. Step 4: Simplify right side
    290,808.63x = 70,676,848,970.57
  5. Step 5: Solve for x
    x = 70,676,848,970.57/290,808.63
  6. Step 6: Final answer
    x = 243,035.60

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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.