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Finding the Fourth Proportional to 388,975.80, 583,463.70 and 310,243.80

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Solution

The fourth proportional to 388,975.80, 583,463.70 and 310,243.80 is: 465,365.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,975.80 : 583,463.70 = 310,243.80 : x
  2. Step 2: Convert to fraction form
    388,975.80/583,463.70 = 310,243.80/x
  3. Step 3: Cross multiply
    388,975.80x = 583,463.70 × 310,243.80
  4. Step 4: Simplify right side
    388,975.80x = 181,015,995,450.06
  5. Step 5: Solve for x
    x = 181,015,995,450.06/388,975.80
  6. Step 6: Final answer
    x = 465,365.70

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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.