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Finding the Fourth Proportional to 297,870.40, 447,727.20 and 292,340.80

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Solution

The fourth proportional to 297,870.40, 447,727.20 and 292,340.80 is: 439,415.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,870.40 : 447,727.20 = 292,340.80 : x
  2. Step 2: Convert to fraction form
    297,870.40/447,727.20 = 292,340.80/x
  3. Step 3: Cross multiply
    297,870.40x = 447,727.20 × 292,340.80
  4. Step 4: Simplify right side
    297,870.40x = 130,888,927,829.76
  5. Step 5: Solve for x
    x = 130,888,927,829.76/297,870.40
  6. Step 6: Final answer
    x = 439,415.69

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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.