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Finding the Fourth Proportional to 296,909.30, 445,363.95 and 260,045.30

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Solution

The fourth proportional to 296,909.30, 445,363.95 and 260,045.30 is: 390,067.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,909.30 : 445,363.95 = 260,045.30 : x
  2. Step 2: Convert to fraction form
    296,909.30/445,363.95 = 260,045.30/x
  3. Step 3: Cross multiply
    296,909.30x = 445,363.95 × 260,045.30
  4. Step 4: Simplify right side
    296,909.30x = 115,814,801,986.94
  5. Step 5: Solve for x
    x = 115,814,801,986.94/296,909.30
  6. Step 6: Final answer
    x = 390,067.95

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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.