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Finding the Fourth Proportional to 288,915.55, 433,432.43 and 99,351.30

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Solution

The fourth proportional to 288,915.55, 433,432.43 and 99,351.30 is: 149,047.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,915.55 : 433,432.43 = 99,351.30 : x
  2. Step 2: Convert to fraction form
    288,915.55/433,432.43 = 99,351.30/x
  3. Step 3: Cross multiply
    288,915.55x = 433,432.43 × 99,351.30
  4. Step 4: Simplify right side
    288,915.55x = 43,062,075,382.66
  5. Step 5: Solve for x
    x = 43,062,075,382.66/288,915.55
  6. Step 6: Final answer
    x = 149,047.27

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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.