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Finding the Fourth Proportional to 290,347.85, 435,422.45 and 110,389.88

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Solution

The fourth proportional to 290,347.85, 435,422.45 and 110,389.88 is: 165,547.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,347.85 : 435,422.45 = 110,389.88 : x
  2. Step 2: Convert to fraction form
    290,347.85/435,422.45 = 110,389.88/x
  3. Step 3: Cross multiply
    290,347.85x = 435,422.45 × 110,389.88
  4. Step 4: Simplify right side
    290,347.85x = 48,066,229,275.74
  5. Step 5: Solve for x
    x = 48,066,229,275.74/290,347.85
  6. Step 6: Final answer
    x = 165,547.05

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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.