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Finding the Fourth Proportional to 245,570.01, 338,883.53 and 138,140.79

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Solution

The fourth proportional to 245,570.01, 338,883.53 and 138,140.79 is: 190,632.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,570.01 : 338,883.53 = 138,140.79 : x
  2. Step 2: Convert to fraction form
    245,570.01/338,883.53 = 138,140.79/x
  3. Step 3: Cross multiply
    245,570.01x = 338,883.53 × 138,140.79
  4. Step 4: Simplify right side
    245,570.01x = 46,813,637,861.48
  5. Step 5: Solve for x
    x = 46,813,637,861.48/245,570.01
  6. Step 6: Final answer
    x = 190,632.55

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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.