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Finding the Fourth Proportional to 359,136, 495,252.60 and 304,836.45

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Solution

The fourth proportional to 359,136, 495,252.60 and 304,836.45 is: 420,372.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,136 : 495,252.60 = 304,836.45 : x
  2. Step 2: Convert to fraction form
    359,136/495,252.60 = 304,836.45/x
  3. Step 3: Cross multiply
    359,136x = 495,252.60 × 304,836.45
  4. Step 4: Simplify right side
    359,136x = 150,971,044,437.27
  5. Step 5: Solve for x
    x = 150,971,044,437.27/359,136
  6. Step 6: Final answer
    x = 420,372.91

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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.