Home / 287,069.43-430,666.38-87,384.60

Finding the Fourth Proportional to 287,069.43, 430,666.38 and 87,384.60

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Solution

The fourth proportional to 287,069.43, 430,666.38 and 87,384.60 is: 131,095.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,069.43 : 430,666.38 = 87,384.60 : x
  2. Step 2: Convert to fraction form
    287,069.43/430,666.38 = 87,384.60/x
  3. Step 3: Cross multiply
    287,069.43x = 430,666.38 × 87,384.60
  4. Step 4: Simplify right side
    287,069.43x = 37,633,609,349.75
  5. Step 5: Solve for x
    x = 37,633,609,349.75/287,069.43
  6. Step 6: Final answer
    x = 131,095.84

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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.