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Finding the Fourth Proportional to 399,068.48, 550,726.12 and 217,792.07

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Solution

The fourth proportional to 399,068.48, 550,726.12 and 217,792.07 is: 300,559.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,068.48 : 550,726.12 = 217,792.07 : x
  2. Step 2: Convert to fraction form
    399,068.48/550,726.12 = 217,792.07/x
  3. Step 3: Cross multiply
    399,068.48x = 550,726.12 × 217,792.07
  4. Step 4: Simplify right side
    399,068.48x = 119,943,780,588.91
  5. Step 5: Solve for x
    x = 119,943,780,588.91/399,068.48
  6. Step 6: Final answer
    x = 300,559.39

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1.5x scale

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.