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Finding the Fourth Proportional to 245,258.84, 338,549.69 and 143,317.45

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Solution

The fourth proportional to 245,258.84, 338,549.69 and 143,317.45 is: 197,832.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,258.84 : 338,549.69 = 143,317.45 : x
  2. Step 2: Convert to fraction form
    245,258.84/338,549.69 = 143,317.45/x
  3. Step 3: Cross multiply
    245,258.84x = 338,549.69 × 143,317.45
  4. Step 4: Simplify right side
    245,258.84x = 48,520,078,269.09
  5. Step 5: Solve for x
    x = 48,520,078,269.09/245,258.84
  6. Step 6: Final answer
    x = 197,832.13

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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.