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Finding the Fourth Proportional to 375,526.48, 518,222.28 and 203,441.20

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Solution

The fourth proportional to 375,526.48, 518,222.28 and 203,441.20 is: 280,746.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,526.48 : 518,222.28 = 203,441.20 : x
  2. Step 2: Convert to fraction form
    375,526.48/518,222.28 = 203,441.20/x
  3. Step 3: Cross multiply
    375,526.48x = 518,222.28 × 203,441.20
  4. Step 4: Simplify right side
    375,526.48x = 105,427,762,509.94
  5. Step 5: Solve for x
    x = 105,427,762,509.94/375,526.48
  6. Step 6: Final answer
    x = 280,746.55

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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.