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Finding the Fourth Proportional to 286,296.04, 429,388.65 and 86,569.60

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Solution

The fourth proportional to 286,296.04, 429,388.65 and 86,569.60 is: 129,837.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,296.04 : 429,388.65 = 86,569.60 : x
  2. Step 2: Convert to fraction form
    286,296.04/429,388.65 = 86,569.60/x
  3. Step 3: Cross multiply
    286,296.04x = 429,388.65 × 86,569.60
  4. Step 4: Simplify right side
    286,296.04x = 37,172,003,675.04
  5. Step 5: Solve for x
    x = 37,172,003,675.04/286,296.04
  6. Step 6: Final answer
    x = 129,837.65

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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.