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Finding the Fourth Proportional to 389,862.84, 585,027.54 and 358,136.76

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Solution

The fourth proportional to 389,862.84, 585,027.54 and 358,136.76 is: 537,419.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,862.84 : 585,027.54 = 358,136.76 : x
  2. Step 2: Convert to fraction form
    389,862.84/585,027.54 = 358,136.76/x
  3. Step 3: Cross multiply
    389,862.84x = 585,027.54 × 358,136.76
  4. Step 4: Simplify right side
    389,862.84x = 209,519,867,686.37
  5. Step 5: Solve for x
    x = 209,519,867,686.37/389,862.84
  6. Step 6: Final answer
    x = 537,419.44

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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.