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Finding the Fourth Proportional to 404,279.98, 558,089.90 and 288,068.47

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Solution

The fourth proportional to 404,279.98, 558,089.90 and 288,068.47 is: 397,665.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,279.98 : 558,089.90 = 288,068.47 : x
  2. Step 2: Convert to fraction form
    404,279.98/558,089.90 = 288,068.47/x
  3. Step 3: Cross multiply
    404,279.98x = 558,089.90 × 288,068.47
  4. Step 4: Simplify right side
    404,279.98x = 160,768,101,860.14
  5. Step 5: Solve for x
    x = 160,768,101,860.14/404,279.98
  6. Step 6: Final answer
    x = 397,665.26

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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.