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Finding the Fourth Proportional to 231,307.40, 346,820.30 and 90,897.80

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Solution

The fourth proportional to 231,307.40, 346,820.30 and 90,897.80 is: 136,291.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,307.40 : 346,820.30 = 90,897.80 : x
  2. Step 2: Convert to fraction form
    231,307.40/346,820.30 = 90,897.80/x
  3. Step 3: Cross multiply
    231,307.40x = 346,820.30 × 90,897.80
  4. Step 4: Simplify right side
    231,307.40x = 31,525,202,265.34
  5. Step 5: Solve for x
    x = 31,525,202,265.34/231,307.40
  6. Step 6: Final answer
    x = 136,291.37

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1.5x scale

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.