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Finding the Fourth Proportional to 319,069.50, 440,318.80 and 175,834.68

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Solution

The fourth proportional to 319,069.50, 440,318.80 and 175,834.68 is: 242,653.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,069.50 : 440,318.80 = 175,834.68 : x
  2. Step 2: Convert to fraction form
    319,069.50/440,318.80 = 175,834.68/x
  3. Step 3: Cross multiply
    319,069.50x = 440,318.80 × 175,834.68
  4. Step 4: Simplify right side
    319,069.50x = 77,423,315,295.98
  5. Step 5: Solve for x
    x = 77,423,315,295.98/319,069.50
  6. Step 6: Final answer
    x = 242,653.45

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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.