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Finding the Fourth Proportional to 661,036.50, 912,230.37 and 359,230.50

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Solution

The fourth proportional to 661,036.50, 912,230.37 and 359,230.50 is: 495,738.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,036.50 : 912,230.37 = 359,230.50 : x
  2. Step 2: Convert to fraction form
    661,036.50/912,230.37 = 359,230.50/x
  3. Step 3: Cross multiply
    661,036.50x = 912,230.37 × 359,230.50
  4. Step 4: Simplify right side
    661,036.50x = 327,700,971,930.29
  5. Step 5: Solve for x
    x = 327,700,971,930.29/661,036.50
  6. Step 6: Final answer
    x = 495,738.09

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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.