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Finding the Fourth Proportional to 375,225.40, 517,811.88 and 203,145.16

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Solution

The fourth proportional to 375,225.40, 517,811.88 and 203,145.16 is: 280,340.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,225.40 : 517,811.88 = 203,145.16 : x
  2. Step 2: Convert to fraction form
    375,225.40/517,811.88 = 203,145.16/x
  3. Step 3: Cross multiply
    375,225.40x = 517,811.88 × 203,145.16
  4. Step 4: Simplify right side
    375,225.40x = 105,190,977,212.50
  5. Step 5: Solve for x
    x = 105,190,977,212.50/375,225.40
  6. Step 6: Final answer
    x = 280,340.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.