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Finding the Fourth Proportional to 250,624.32, 345,866.40 and 137,440.32

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Solution

The fourth proportional to 250,624.32, 345,866.40 and 137,440.32 is: 189,670.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,624.32 : 345,866.40 = 137,440.32 : x
  2. Step 2: Convert to fraction form
    250,624.32/345,866.40 = 137,440.32/x
  3. Step 3: Cross multiply
    250,624.32x = 345,866.40 × 137,440.32
  4. Step 4: Simplify right side
    250,624.32x = 47,535,988,693.25
  5. Step 5: Solve for x
    x = 47,535,988,693.25/250,624.32
  6. Step 6: Final answer
    x = 189,670.29

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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.