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Finding the Fourth Proportional to 542,362.68, 813,451.54 and 143,007.38

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Solution

The fourth proportional to 542,362.68, 813,451.54 and 143,007.38 is: 214,486.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,362.68 : 813,451.54 = 143,007.38 : x
  2. Step 2: Convert to fraction form
    542,362.68/813,451.54 = 143,007.38/x
  3. Step 3: Cross multiply
    542,362.68x = 813,451.54 × 143,007.38
  4. Step 4: Simplify right side
    542,362.68x = 116,329,573,492.37
  5. Step 5: Solve for x
    x = 116,329,573,492.37/542,362.68
  6. Step 6: Final answer
    x = 214,486.69

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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.