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Finding the Fourth Proportional to 290,988.40, 436,355.35 and 146,805.51

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Solution

The fourth proportional to 290,988.40, 436,355.35 and 146,805.51 is: 220,144.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,988.40 : 436,355.35 = 146,805.51 : x
  2. Step 2: Convert to fraction form
    290,988.40/436,355.35 = 146,805.51/x
  3. Step 3: Cross multiply
    290,988.40x = 436,355.35 × 146,805.51
  4. Step 4: Simplify right side
    290,988.40x = 64,059,367,758.00
  5. Step 5: Solve for x
    x = 64,059,367,758.00/290,988.40
  6. Step 6: Final answer
    x = 220,144.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.