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Finding the Fourth Proportional to 251,480.94, 347,036.76 and 138,303.78

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Solution

The fourth proportional to 251,480.94, 347,036.76 and 138,303.78 is: 190,855.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,480.94 : 347,036.76 = 138,303.78 : x
  2. Step 2: Convert to fraction form
    251,480.94/347,036.76 = 138,303.78/x
  3. Step 3: Cross multiply
    251,480.94x = 347,036.76 × 138,303.78
  4. Step 4: Simplify right side
    251,480.94x = 47,996,495,706.95
  5. Step 5: Solve for x
    x = 47,996,495,706.95/251,480.94
  6. Step 6: Final answer
    x = 190,855.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.