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Finding the Fourth Proportional to 265,622.88, 366,918.56 and 212,281.76

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Solution

The fourth proportional to 265,622.88, 366,918.56 and 212,281.76 is: 293,235.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,622.88 : 366,918.56 = 212,281.76 : x
  2. Step 2: Convert to fraction form
    265,622.88/366,918.56 = 212,281.76/x
  3. Step 3: Cross multiply
    265,622.88x = 366,918.56 × 212,281.76
  4. Step 4: Simplify right side
    265,622.88x = 77,890,117,693.47
  5. Step 5: Solve for x
    x = 77,890,117,693.47/265,622.88
  6. Step 6: Final answer
    x = 293,235.72

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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.