Home / 255,931.40-383,897.06-137,439.74

Finding the Fourth Proportional to 255,931.40, 383,897.06 and 137,439.74

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Solution

The fourth proportional to 255,931.40, 383,897.06 and 137,439.74 is: 206,159.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,931.40 : 383,897.06 = 137,439.74 : x
  2. Step 2: Convert to fraction form
    255,931.40/383,897.06 = 137,439.74/x
  3. Step 3: Cross multiply
    255,931.40x = 383,897.06 × 137,439.74
  4. Step 4: Simplify right side
    255,931.40x = 52,762,712,113.16
  5. Step 5: Solve for x
    x = 52,762,712,113.16/255,931.40
  6. Step 6: Final answer
    x = 206,159.59

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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.