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Finding the Fourth Proportional to 617,128.05, 925,510.63 and 262,139.25

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Solution

The fourth proportional to 617,128.05, 925,510.63 and 262,139.25 is: 393,131.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,128.05 : 925,510.63 = 262,139.25 : x
  2. Step 2: Convert to fraction form
    617,128.05/925,510.63 = 262,139.25/x
  3. Step 3: Cross multiply
    617,128.05x = 925,510.63 × 262,139.25
  4. Step 4: Simplify right side
    617,128.05x = 242,612,662,415.23
  5. Step 5: Solve for x
    x = 242,612,662,415.23/617,128.05
  6. Step 6: Final answer
    x = 393,131.80

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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.