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Finding the Fourth Proportional to 296,998.80, 445,498.20 and 266,931.60

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Solution

The fourth proportional to 296,998.80, 445,498.20 and 266,931.60 is: 400,397.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,998.80 : 445,498.20 = 266,931.60 : x
  2. Step 2: Convert to fraction form
    296,998.80/445,498.20 = 266,931.60/x
  3. Step 3: Cross multiply
    296,998.80x = 445,498.20 × 266,931.60
  4. Step 4: Simplify right side
    296,998.80x = 118,917,547,323.12
  5. Step 5: Solve for x
    x = 118,917,547,323.12/296,998.80
  6. Step 6: Final answer
    x = 400,397.40

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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.