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Finding the Fourth Proportional to 319,502.55, 478,846.80 and 169,814.55

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Solution

The fourth proportional to 319,502.55, 478,846.80 and 169,814.55 is: 254,505.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,502.55 : 478,846.80 = 169,814.55 : x
  2. Step 2: Convert to fraction form
    319,502.55/478,846.80 = 169,814.55/x
  3. Step 3: Cross multiply
    319,502.55x = 478,846.80 × 169,814.55
  4. Step 4: Simplify right side
    319,502.55x = 81,315,153,860.94
  5. Step 5: Solve for x
    x = 81,315,153,860.94/319,502.55
  6. Step 6: Final answer
    x = 254,505.49

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1.5x scale

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.