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Finding the Fourth Proportional to 286,544.40, 429,820.20 and 86,866.80

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Solution

The fourth proportional to 286,544.40, 429,820.20 and 86,866.80 is: 130,301.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,544.40 : 429,820.20 = 86,866.80 : x
  2. Step 2: Convert to fraction form
    286,544.40/429,820.20 = 86,866.80/x
  3. Step 3: Cross multiply
    286,544.40x = 429,820.20 × 86,866.80
  4. Step 4: Simplify right side
    286,544.40x = 37,337,105,349.36
  5. Step 5: Solve for x
    x = 37,337,105,349.36/286,544.40
  6. Step 6: Final answer
    x = 130,301.29

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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.