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Finding the Fourth Proportional to 423,424.49, 634,306.32 and 245,557.80

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Solution

The fourth proportional to 423,424.49, 634,306.32 and 245,557.80 is: 367,855.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,424.49 : 634,306.32 = 245,557.80 : x
  2. Step 2: Convert to fraction form
    423,424.49/634,306.32 = 245,557.80/x
  3. Step 3: Cross multiply
    423,424.49x = 634,306.32 × 245,557.80
  4. Step 4: Simplify right side
    423,424.49x = 155,758,864,465.30
  5. Step 5: Solve for x
    x = 155,758,864,465.30/423,424.49
  6. Step 6: Final answer
    x = 367,855.12

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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.