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Finding the Fourth Proportional to 553,882.71, 830,491.89 and 253,987.62

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Solution

The fourth proportional to 553,882.71, 830,491.89 and 253,987.62 is: 380,829.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,882.71 : 830,491.89 = 253,987.62 : x
  2. Step 2: Convert to fraction form
    553,882.71/830,491.89 = 253,987.62/x
  3. Step 3: Cross multiply
    553,882.71x = 830,491.89 × 253,987.62
  4. Step 4: Simplify right side
    553,882.71x = 210,934,658,570.40
  5. Step 5: Solve for x
    x = 210,934,658,570.40/553,882.71
  6. Step 6: Final answer
    x = 380,829.11

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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.