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Finding the Fourth Proportional to 978,154.88, 1,467,134.04 and 268,254.32

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Solution

The fourth proportional to 978,154.88, 1,467,134.04 and 268,254.32 is: 402,354.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,154.88 : 1,467,134.04 = 268,254.32 : x
  2. Step 2: Convert to fraction form
    978,154.88/1,467,134.04 = 268,254.32/x
  3. Step 3: Cross multiply
    978,154.88x = 1,467,134.04 × 268,254.32
  4. Step 4: Simplify right side
    978,154.88x = 393,565,044,249.05
  5. Step 5: Solve for x
    x = 393,565,044,249.05/978,154.88
  6. Step 6: Final answer
    x = 402,354.53

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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.