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Finding the Fourth Proportional to 318,672, 439,796.64 and 175,461.12

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Solution

The fourth proportional to 318,672, 439,796.64 and 175,461.12 is: 242,152.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,672 : 439,796.64 = 175,461.12 : x
  2. Step 2: Convert to fraction form
    318,672/439,796.64 = 175,461.12/x
  3. Step 3: Cross multiply
    318,672x = 439,796.64 × 175,461.12
  4. Step 4: Simplify right side
    318,672x = 77,167,211,026.64
  5. Step 5: Solve for x
    x = 77,167,211,026.64/318,672
  6. Step 6: Final answer
    x = 242,152.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.