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Finding the Fourth Proportional to 290,959.48, 435,830.10 and 234,479.80

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Solution

The fourth proportional to 290,959.48, 435,830.10 and 234,479.80 is: 351,228.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,959.48 : 435,830.10 = 234,479.80 : x
  2. Step 2: Convert to fraction form
    290,959.48/435,830.10 = 234,479.80/x
  3. Step 3: Cross multiply
    290,959.48x = 435,830.10 × 234,479.80
  4. Step 4: Simplify right side
    290,959.48x = 102,193,354,681.98
  5. Step 5: Solve for x
    x = 102,193,354,681.98/290,959.48
  6. Step 6: Final answer
    x = 351,228.82

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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.