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Finding the Fourth Proportional to 292,505.76, 438,758.62 and 70,889.76

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Solution

The fourth proportional to 292,505.76, 438,758.62 and 70,889.76 is: 106,334.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,505.76 : 438,758.62 = 70,889.76 : x
  2. Step 2: Convert to fraction form
    292,505.76/438,758.62 = 70,889.76/x
  3. Step 3: Cross multiply
    292,505.76x = 438,758.62 × 70,889.76
  4. Step 4: Simplify right side
    292,505.76x = 31,103,493,269.73
  5. Step 5: Solve for x
    x = 31,103,493,269.73/292,505.76
  6. Step 6: Final answer
    x = 106,334.64

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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.