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Finding the Fourth Proportional to 355,565.79, 533,349.20 and 145,203.72

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Solution

The fourth proportional to 355,565.79, 533,349.20 and 145,203.72 is: 217,805.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,565.79 : 533,349.20 = 145,203.72 : x
  2. Step 2: Convert to fraction form
    355,565.79/533,349.20 = 145,203.72/x
  3. Step 3: Cross multiply
    355,565.79x = 533,349.20 × 145,203.72
  4. Step 4: Simplify right side
    355,565.79x = 77,444,287,173.01
  5. Step 5: Solve for x
    x = 77,444,287,173.01/355,565.79
  6. Step 6: Final answer
    x = 217,805.79

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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.