Home / 255,931.45-383,897.10-137,439.79

Finding the Fourth Proportional to 255,931.45, 383,897.10 and 137,439.79

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Solution

The fourth proportional to 255,931.45, 383,897.10 and 137,439.79 is: 206,159.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,931.45 : 383,897.10 = 137,439.79 : x
  2. Step 2: Convert to fraction form
    255,931.45/383,897.10 = 137,439.79/x
  3. Step 3: Cross multiply
    255,931.45x = 383,897.10 × 137,439.79
  4. Step 4: Simplify right side
    255,931.45x = 52,762,736,805.61
  5. Step 5: Solve for x
    x = 52,762,736,805.61/255,931.45
  6. Step 6: Final answer
    x = 206,159.64

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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.