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Finding the Fourth Proportional to 485,070.76, 669,354.23 and 270,206.21

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Solution

The fourth proportional to 485,070.76, 669,354.23 and 270,206.21 is: 372,860.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,070.76 : 669,354.23 = 270,206.21 : x
  2. Step 2: Convert to fraction form
    485,070.76/669,354.23 = 270,206.21/x
  3. Step 3: Cross multiply
    485,070.76x = 669,354.23 × 270,206.21
  4. Step 4: Simplify right side
    485,070.76x = 180,863,671,984.67
  5. Step 5: Solve for x
    x = 180,863,671,984.67/485,070.76
  6. Step 6: Final answer
    x = 372,860.39

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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.