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Finding the Fourth Proportional to 283,457.66, 391,172.62 and 156,132.94

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Solution

The fourth proportional to 283,457.66, 391,172.62 and 156,132.94 is: 215,464.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,457.66 : 391,172.62 = 156,132.94 : x
  2. Step 2: Convert to fraction form
    283,457.66/391,172.62 = 156,132.94/x
  3. Step 3: Cross multiply
    283,457.66x = 391,172.62 × 156,132.94
  4. Step 4: Simplify right side
    283,457.66x = 61,074,931,208.10
  5. Step 5: Solve for x
    x = 61,074,931,208.10/283,457.66
  6. Step 6: Final answer
    x = 215,464.04

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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.