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Finding the Fourth Proportional to 309,528.80, 464,424.42 and 169,123.40

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Solution

The fourth proportional to 309,528.80, 464,424.42 and 169,123.40 is: 253,756.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,528.80 : 464,424.42 = 169,123.40 : x
  2. Step 2: Convert to fraction form
    309,528.80/464,424.42 = 169,123.40/x
  3. Step 3: Cross multiply
    309,528.80x = 464,424.42 × 169,123.40
  4. Step 4: Simplify right side
    309,528.80x = 78,545,036,953.43
  5. Step 5: Solve for x
    x = 78,545,036,953.43/309,528.80
  6. Step 6: Final answer
    x = 253,756.80

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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.