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Finding the Fourth Proportional to 375,225.61, 517,812.20 and 203,145.39

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Solution

The fourth proportional to 375,225.61, 517,812.20 and 203,145.39 is: 280,341.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,225.61 : 517,812.20 = 203,145.39 : x
  2. Step 2: Convert to fraction form
    375,225.61/517,812.20 = 203,145.39/x
  3. Step 3: Cross multiply
    375,225.61x = 517,812.20 × 203,145.39
  4. Step 4: Simplify right side
    375,225.61x = 105,191,161,315.76
  5. Step 5: Solve for x
    x = 105,191,161,315.76/375,225.61
  6. Step 6: Final answer
    x = 280,341.10

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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.