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Finding the Fourth Proportional to 310,315.65, 428,248.82 and 174,349.86

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Solution

The fourth proportional to 310,315.65, 428,248.82 and 174,349.86 is: 240,610.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,315.65 : 428,248.82 = 174,349.86 : x
  2. Step 2: Convert to fraction form
    310,315.65/428,248.82 = 174,349.86/x
  3. Step 3: Cross multiply
    310,315.65x = 428,248.82 × 174,349.86
  4. Step 4: Simplify right side
    310,315.65x = 74,665,120,940.42
  5. Step 5: Solve for x
    x = 74,665,120,940.42/310,315.65
  6. Step 6: Final answer
    x = 240,610.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.