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Finding the Fourth Proportional to 290,029.56, 435,026.88 and 172,449.16

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Solution

The fourth proportional to 290,029.56, 435,026.88 and 172,449.16 is: 258,663.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,029.56 : 435,026.88 = 172,449.16 : x
  2. Step 2: Convert to fraction form
    290,029.56/435,026.88 = 172,449.16/x
  3. Step 3: Cross multiply
    290,029.56x = 435,026.88 × 172,449.16
  4. Step 4: Simplify right side
    290,029.56x = 75,020,020,033.42
  5. Step 5: Solve for x
    x = 75,020,020,033.42/290,029.56
  6. Step 6: Final answer
    x = 258,663.36

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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.