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Finding the Fourth Proportional to 265,890.48, 398,715.56 and 76,307.66

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Solution

The fourth proportional to 265,890.48, 398,715.56 and 76,307.66 is: 114,427.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,890.48 : 398,715.56 = 76,307.66 : x
  2. Step 2: Convert to fraction form
    265,890.48/398,715.56 = 76,307.66/x
  3. Step 3: Cross multiply
    265,890.48x = 398,715.56 × 76,307.66
  4. Step 4: Simplify right side
    265,890.48x = 30,425,051,389.19
  5. Step 5: Solve for x
    x = 30,425,051,389.19/265,890.48
  6. Step 6: Final answer
    x = 114,427.01

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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.