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Finding the Fourth Proportional to 296,678.72, 442,163.76 and 291,954.88

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Solution

The fourth proportional to 296,678.72, 442,163.76 and 291,954.88 is: 435,123.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,678.72 : 442,163.76 = 291,954.88 : x
  2. Step 2: Convert to fraction form
    296,678.72/442,163.76 = 291,954.88/x
  3. Step 3: Cross multiply
    296,678.72x = 442,163.76 × 291,954.88
  4. Step 4: Simplify right side
    296,678.72x = 129,091,867,491.15
  5. Step 5: Solve for x
    x = 129,091,867,491.15/296,678.72
  6. Step 6: Final answer
    x = 435,123.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.