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Finding the Fourth Proportional to 328,365.17, 492,598.45 and 138,826.16

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Solution

The fourth proportional to 328,365.17, 492,598.45 and 138,826.16 is: 208,260.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,365.17 : 492,598.45 = 138,826.16 : x
  2. Step 2: Convert to fraction form
    328,365.17/492,598.45 = 138,826.16/x
  3. Step 3: Cross multiply
    328,365.17x = 492,598.45 × 138,826.16
  4. Step 4: Simplify right side
    328,365.17x = 68,385,550,012.34
  5. Step 5: Solve for x
    x = 68,385,550,012.34/328,365.17
  6. Step 6: Final answer
    x = 208,260.67

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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.