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Finding the Fourth Proportional to 286,298.04, 429,391.65 and 86,571.60

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Solution

The fourth proportional to 286,298.04, 429,391.65 and 86,571.60 is: 129,840.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,298.04 : 429,391.65 = 86,571.60 : x
  2. Step 2: Convert to fraction form
    286,298.04/429,391.65 = 86,571.60/x
  3. Step 3: Cross multiply
    286,298.04x = 429,391.65 × 86,571.60
  4. Step 4: Simplify right side
    286,298.04x = 37,173,122,167.14
  5. Step 5: Solve for x
    x = 37,173,122,167.14/286,298.04
  6. Step 6: Final answer
    x = 129,840.64

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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.