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Finding the Fourth Proportional to 286,273.13, 429,409.69 and 89,281.13

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Solution

The fourth proportional to 286,273.13, 429,409.69 and 89,281.13 is: 133,921.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,273.13 : 429,409.69 = 89,281.13 : x
  2. Step 2: Convert to fraction form
    286,273.13/429,409.69 = 89,281.13/x
  3. Step 3: Cross multiply
    286,273.13x = 429,409.69 × 89,281.13
  4. Step 4: Simplify right side
    286,273.13x = 38,338,179,985.90
  5. Step 5: Solve for x
    x = 38,338,179,985.90/286,273.13
  6. Step 6: Final answer
    x = 133,921.69

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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.