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Finding the Fourth Proportional to 487,140.89, 672,258.89 and 269,346.67

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Solution

The fourth proportional to 487,140.89, 672,258.89 and 269,346.67 is: 371,700.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,140.89 : 672,258.89 = 269,346.67 : x
  2. Step 2: Convert to fraction form
    487,140.89/672,258.89 = 269,346.67/x
  3. Step 3: Cross multiply
    487,140.89x = 672,258.89 × 269,346.67
  4. Step 4: Simplify right side
    487,140.89x = 181,070,692,392.12
  5. Step 5: Solve for x
    x = 181,070,692,392.12/487,140.89
  6. Step 6: Final answer
    x = 371,700.87

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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.