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Finding the Fourth Proportional to 267,663.79, 401,368.57 and 155,378.45

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Solution

The fourth proportional to 267,663.79, 401,368.57 and 155,378.45 is: 232,993.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,663.79 : 401,368.57 = 155,378.45 : x
  2. Step 2: Convert to fraction form
    267,663.79/401,368.57 = 155,378.45/x
  3. Step 3: Cross multiply
    267,663.79x = 401,368.57 × 155,378.45
  4. Step 4: Simplify right side
    267,663.79x = 62,364,026,900.29
  5. Step 5: Solve for x
    x = 62,364,026,900.29/267,663.79
  6. Step 6: Final answer
    x = 232,993.89

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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.