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Finding the Fourth Proportional to 292,303.90, 438,423.45 and 81,963.10

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Solution

The fourth proportional to 292,303.90, 438,423.45 and 81,963.10 is: 122,935.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,303.90 : 438,423.45 = 81,963.10 : x
  2. Step 2: Convert to fraction form
    292,303.90/438,423.45 = 81,963.10/x
  3. Step 3: Cross multiply
    292,303.90x = 438,423.45 × 81,963.10
  4. Step 4: Simplify right side
    292,303.90x = 35,934,545,074.70
  5. Step 5: Solve for x
    x = 35,934,545,074.70/292,303.90
  6. Step 6: Final answer
    x = 122,935.56

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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.