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Finding the Fourth Proportional to 389,788.53, 584,721 and 162,037.05

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Solution

The fourth proportional to 389,788.53, 584,721 and 162,037.05 is: 243,071.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,788.53 : 584,721 = 162,037.05 : x
  2. Step 2: Convert to fraction form
    389,788.53/584,721 = 162,037.05/x
  3. Step 3: Cross multiply
    389,788.53x = 584,721 × 162,037.05
  4. Step 4: Simplify right side
    389,788.53x = 94,746,465,913.05
  5. Step 5: Solve for x
    x = 94,746,465,913.05/389,788.53
  6. Step 6: Final answer
    x = 243,071.46

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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.