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Finding the Fourth Proportional to 303,417.80, 455,126.70 and 103,744.70

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Solution

The fourth proportional to 303,417.80, 455,126.70 and 103,744.70 is: 155,617.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,417.80 : 455,126.70 = 103,744.70 : x
  2. Step 2: Convert to fraction form
    303,417.80/455,126.70 = 103,744.70/x
  3. Step 3: Cross multiply
    303,417.80x = 455,126.70 × 103,744.70
  4. Step 4: Simplify right side
    303,417.80x = 47,216,982,953.49
  5. Step 5: Solve for x
    x = 47,216,982,953.49/303,417.80
  6. Step 6: Final answer
    x = 155,617.05

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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.