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Finding the Fourth Proportional to 393,567.40, 590,642.70 and 157,079.80

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Solution

The fourth proportional to 393,567.40, 590,642.70 and 157,079.80 is: 235,736.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,567.40 : 590,642.70 = 157,079.80 : x
  2. Step 2: Convert to fraction form
    393,567.40/590,642.70 = 157,079.80/x
  3. Step 3: Cross multiply
    393,567.40x = 590,642.70 × 157,079.80
  4. Step 4: Simplify right side
    393,567.40x = 92,778,037,187.46
  5. Step 5: Solve for x
    x = 92,778,037,187.46/393,567.40
  6. Step 6: Final answer
    x = 235,736.08

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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.