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Finding the Fourth Proportional to 288,553.30, 432,829.95 and 155,693.05

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Solution

The fourth proportional to 288,553.30, 432,829.95 and 155,693.05 is: 233,539.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,553.30 : 432,829.95 = 155,693.05 : x
  2. Step 2: Convert to fraction form
    288,553.30/432,829.95 = 155,693.05/x
  3. Step 3: Cross multiply
    288,553.30x = 432,829.95 × 155,693.05
  4. Step 4: Simplify right side
    288,553.30x = 67,388,615,046.85
  5. Step 5: Solve for x
    x = 67,388,615,046.85/288,553.30
  6. Step 6: Final answer
    x = 233,539.58

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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.