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Finding the Fourth Proportional to 250,675.20, 345,929.40 and 137,498.40

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Solution

The fourth proportional to 250,675.20, 345,929.40 and 137,498.40 is: 189,746.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,675.20 : 345,929.40 = 137,498.40 : x
  2. Step 2: Convert to fraction form
    250,675.20/345,929.40 = 137,498.40/x
  3. Step 3: Cross multiply
    250,675.20x = 345,929.40 × 137,498.40
  4. Step 4: Simplify right side
    250,675.20x = 47,564,739,012.96
  5. Step 5: Solve for x
    x = 47,564,739,012.96/250,675.20
  6. Step 6: Final answer
    x = 189,746.49

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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.