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Finding the Fourth Proportional to 388,693.29, 582,909.70 and 148,751.45

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Solution

The fourth proportional to 388,693.29, 582,909.70 and 148,751.45 is: 223,077.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,693.29 : 582,909.70 = 148,751.45 : x
  2. Step 2: Convert to fraction form
    388,693.29/582,909.70 = 148,751.45/x
  3. Step 3: Cross multiply
    388,693.29x = 582,909.70 × 148,751.45
  4. Step 4: Simplify right side
    388,693.29x = 86,708,663,094.07
  5. Step 5: Solve for x
    x = 86,708,663,094.07/388,693.29
  6. Step 6: Final answer
    x = 223,077.33

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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.