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Finding the Fourth Proportional to 404,898.10, 607,347.15 and 272,187.70

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Solution

The fourth proportional to 404,898.10, 607,347.15 and 272,187.70 is: 408,281.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,898.10 : 607,347.15 = 272,187.70 : x
  2. Step 2: Convert to fraction form
    404,898.10/607,347.15 = 272,187.70/x
  3. Step 3: Cross multiply
    404,898.10x = 607,347.15 × 272,187.70
  4. Step 4: Simplify right side
    404,898.10x = 165,312,423,860.06
  5. Step 5: Solve for x
    x = 165,312,423,860.06/404,898.10
  6. Step 6: Final answer
    x = 408,281.55

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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.