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Finding the Fourth Proportional to 478,934.84, 718,457.85 and 159,115.25

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Solution

The fourth proportional to 478,934.84, 718,457.85 and 159,115.25 is: 238,691.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,934.84 : 718,457.85 = 159,115.25 : x
  2. Step 2: Convert to fraction form
    478,934.84/718,457.85 = 159,115.25/x
  3. Step 3: Cross multiply
    478,934.84x = 718,457.85 × 159,115.25
  4. Step 4: Simplify right side
    478,934.84x = 114,317,602,213.36
  5. Step 5: Solve for x
    x = 114,317,602,213.36/478,934.84
  6. Step 6: Final answer
    x = 238,691.35

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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.