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Finding the Fourth Proportional to 310,940.80, 466,526.40 and 299,420.80

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Solution

The fourth proportional to 310,940.80, 466,526.40 and 299,420.80 is: 449,242.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,940.80 : 466,526.40 = 299,420.80 : x
  2. Step 2: Convert to fraction form
    310,940.80/466,526.40 = 299,420.80/x
  3. Step 3: Cross multiply
    310,940.80x = 466,526.40 × 299,420.80
  4. Step 4: Simplify right side
    310,940.80x = 139,687,707,909.12
  5. Step 5: Solve for x
    x = 139,687,707,909.12/310,940.80
  6. Step 6: Final answer
    x = 449,242.13

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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.