Home / 290,444.20-435,083.10-165,639.40

Finding the Fourth Proportional to 290,444.20, 435,083.10 and 165,639.40

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Solution

The fourth proportional to 290,444.20, 435,083.10 and 165,639.40 is: 248,126.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,444.20 : 435,083.10 = 165,639.40 : x
  2. Step 2: Convert to fraction form
    290,444.20/435,083.10 = 165,639.40/x
  3. Step 3: Cross multiply
    290,444.20x = 435,083.10 × 165,639.40
  4. Step 4: Simplify right side
    290,444.20x = 72,066,903,634.14
  5. Step 5: Solve for x
    x = 72,066,903,634.14/290,444.20
  6. Step 6: Final answer
    x = 248,126.50

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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.