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Finding the Fourth Proportional to 292,992.64, 439,501.74 and 143,358.92

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Solution

The fourth proportional to 292,992.64, 439,501.74 and 143,358.92 is: 215,044.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,992.64 : 439,501.74 = 143,358.92 : x
  2. Step 2: Convert to fraction form
    292,992.64/439,501.74 = 143,358.92/x
  3. Step 3: Cross multiply
    292,992.64x = 439,501.74 × 143,358.92
  4. Step 4: Simplify right side
    292,992.64x = 63,006,494,784.52
  5. Step 5: Solve for x
    x = 63,006,494,784.52/292,992.64
  6. Step 6: Final answer
    x = 215,044.63

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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.