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Finding the Fourth Proportional to 143,607.78, 215,411.67 and 38,424.06

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Solution

The fourth proportional to 143,607.78, 215,411.67 and 38,424.06 is: 57,636.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,607.78 : 215,411.67 = 38,424.06 : x
  2. Step 2: Convert to fraction form
    143,607.78/215,411.67 = 38,424.06/x
  3. Step 3: Cross multiply
    143,607.78x = 215,411.67 × 38,424.06
  4. Step 4: Simplify right side
    143,607.78x = 8,276,990,932.78
  5. Step 5: Solve for x
    x = 8,276,990,932.78/143,607.78
  6. Step 6: Final answer
    x = 57,636.09

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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.