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Finding the Fourth Proportional to 296,922.80, 445,384.20 and 86,567.60

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Solution

The fourth proportional to 296,922.80, 445,384.20 and 86,567.60 is: 129,851.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,922.80 : 445,384.20 = 86,567.60 : x
  2. Step 2: Convert to fraction form
    296,922.80/445,384.20 = 86,567.60/x
  3. Step 3: Cross multiply
    296,922.80x = 445,384.20 × 86,567.60
  4. Step 4: Simplify right side
    296,922.80x = 38,555,841,271.92
  5. Step 5: Solve for x
    x = 38,555,841,271.92/296,922.80
  6. Step 6: Final answer
    x = 129,851.40

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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.