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Finding the Fourth Proportional to 251,470.65, 347,022.57 and 138,293.40

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Solution

The fourth proportional to 251,470.65, 347,022.57 and 138,293.40 is: 190,841.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,470.65 : 347,022.57 = 138,293.40 : x
  2. Step 2: Convert to fraction form
    251,470.65/347,022.57 = 138,293.40/x
  3. Step 3: Cross multiply
    251,470.65x = 347,022.57 × 138,293.40
  4. Step 4: Simplify right side
    251,470.65x = 47,990,931,082.04
  5. Step 5: Solve for x
    x = 47,990,931,082.04/251,470.65
  6. Step 6: Final answer
    x = 190,841.08

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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.