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Finding the Fourth Proportional to 388,705.67, 536,230.47 and 227,460.89

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Solution

The fourth proportional to 388,705.67, 536,230.47 and 227,460.89 is: 313,788.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,705.67 : 536,230.47 = 227,460.89 : x
  2. Step 2: Convert to fraction form
    388,705.67/536,230.47 = 227,460.89/x
  3. Step 3: Cross multiply
    388,705.67x = 536,230.47 × 227,460.89
  4. Step 4: Simplify right side
    388,705.67x = 121,971,457,270.17
  5. Step 5: Solve for x
    x = 121,971,457,270.17/388,705.67
  6. Step 6: Final answer
    x = 313,788.73

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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.