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Finding the Fourth Proportional to 384,075.20, 576,112.80 and 103,592.40

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Solution

The fourth proportional to 384,075.20, 576,112.80 and 103,592.40 is: 155,388.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,075.20 : 576,112.80 = 103,592.40 : x
  2. Step 2: Convert to fraction form
    384,075.20/576,112.80 = 103,592.40/x
  3. Step 3: Cross multiply
    384,075.20x = 576,112.80 × 103,592.40
  4. Step 4: Simplify right side
    384,075.20x = 59,680,907,622.72
  5. Step 5: Solve for x
    x = 59,680,907,622.72/384,075.20
  6. Step 6: Final answer
    x = 155,388.60

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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.