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Finding the Fourth Proportional to 294,065.40, 439,931.70 and 255,055.80

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Solution

The fourth proportional to 294,065.40, 439,931.70 and 255,055.80 is: 381,572.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,065.40 : 439,931.70 = 255,055.80 : x
  2. Step 2: Convert to fraction form
    294,065.40/439,931.70 = 255,055.80/x
  3. Step 3: Cross multiply
    294,065.40x = 439,931.70 × 255,055.80
  4. Step 4: Simplify right side
    294,065.40x = 112,207,131,688.86
  5. Step 5: Solve for x
    x = 112,207,131,688.86/294,065.40
  6. Step 6: Final answer
    x = 381,572.03

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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.