Home / 460,915.20-691,437.60-145,339.20

Finding the Fourth Proportional to 460,915.20, 691,437.60 and 145,339.20

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Solution

The fourth proportional to 460,915.20, 691,437.60 and 145,339.20 is: 218,029.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,915.20 : 691,437.60 = 145,339.20 : x
  2. Step 2: Convert to fraction form
    460,915.20/691,437.60 = 145,339.20/x
  3. Step 3: Cross multiply
    460,915.20x = 691,437.60 × 145,339.20
  4. Step 4: Simplify right side
    460,915.20x = 100,492,987,633.92
  5. Step 5: Solve for x
    x = 100,492,987,633.92/460,915.20
  6. Step 6: Final answer
    x = 218,029.23

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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.