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Finding the Fourth Proportional to 286,270.40, 429,405.60 and 202,289.60

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Solution

The fourth proportional to 286,270.40, 429,405.60 and 202,289.60 is: 303,434.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,270.40 : 429,405.60 = 202,289.60 : x
  2. Step 2: Convert to fraction form
    286,270.40/429,405.60 = 202,289.60/x
  3. Step 3: Cross multiply
    286,270.40x = 429,405.60 × 202,289.60
  4. Step 4: Simplify right side
    286,270.40x = 86,864,287,061.76
  5. Step 5: Solve for x
    x = 86,864,287,061.76/286,270.40
  6. Step 6: Final answer
    x = 303,434.40

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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.