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Finding the Fourth Proportional to 328,908.60, 493,362.90 and 141,920.10

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Solution

The fourth proportional to 328,908.60, 493,362.90 and 141,920.10 is: 212,880.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,908.60 : 493,362.90 = 141,920.10 : x
  2. Step 2: Convert to fraction form
    328,908.60/493,362.90 = 141,920.10/x
  3. Step 3: Cross multiply
    328,908.60x = 493,362.90 × 141,920.10
  4. Step 4: Simplify right side
    328,908.60x = 70,018,112,104.29
  5. Step 5: Solve for x
    x = 70,018,112,104.29/328,908.60
  6. Step 6: Final answer
    x = 212,880.15

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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.