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Finding the Fourth Proportional to 261,666.60, 392,960.70 and 202,645.80

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Solution

The fourth proportional to 261,666.60, 392,960.70 and 202,645.80 is: 304,325.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,666.60 : 392,960.70 = 202,645.80 : x
  2. Step 2: Convert to fraction form
    261,666.60/392,960.70 = 202,645.80/x
  3. Step 3: Cross multiply
    261,666.60x = 392,960.70 × 202,645.80
  4. Step 4: Simplify right side
    261,666.60x = 79,631,835,420.06
  5. Step 5: Solve for x
    x = 79,631,835,420.06/261,666.60
  6. Step 6: Final answer
    x = 304,325.56

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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.