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Finding the Fourth Proportional to 352,885.68, 529,338.96 and 86,646.24

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Solution

The fourth proportional to 352,885.68, 529,338.96 and 86,646.24 is: 129,971.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,885.68 : 529,338.96 = 86,646.24 : x
  2. Step 2: Convert to fraction form
    352,885.68/529,338.96 = 86,646.24/x
  3. Step 3: Cross multiply
    352,885.68x = 529,338.96 × 86,646.24
  4. Step 4: Simplify right side
    352,885.68x = 45,865,230,569.51
  5. Step 5: Solve for x
    x = 45,865,230,569.51/352,885.68
  6. Step 6: Final answer
    x = 129,971.92

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1.5x scale

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.