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Finding the Fourth Proportional to 388,839.60, 583,259.40 and 262,868.40

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Solution

The fourth proportional to 388,839.60, 583,259.40 and 262,868.40 is: 394,302.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,839.60 : 583,259.40 = 262,868.40 : x
  2. Step 2: Convert to fraction form
    388,839.60/583,259.40 = 262,868.40/x
  3. Step 3: Cross multiply
    388,839.60x = 583,259.40 × 262,868.40
  4. Step 4: Simplify right side
    388,839.60x = 153,320,465,262.96
  5. Step 5: Solve for x
    x = 153,320,465,262.96/388,839.60
  6. Step 6: Final answer
    x = 394,302.60

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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.