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Finding the Fourth Proportional to 290,332.14, 435,498.00 and 90,669.63

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Solution

The fourth proportional to 290,332.14, 435,498.00 and 90,669.63 is: 136,004.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,332.14 : 435,498.00 = 90,669.63 : x
  2. Step 2: Convert to fraction form
    290,332.14/435,498.00 = 90,669.63/x
  3. Step 3: Cross multiply
    290,332.14x = 435,498.00 × 90,669.63
  4. Step 4: Simplify right side
    290,332.14x = 39,486,443,841.16
  5. Step 5: Solve for x
    x = 39,486,443,841.16/290,332.14
  6. Step 6: Final answer
    x = 136,004.39

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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.