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Finding the Fourth Proportional to 353,421.74, 530,119.86 and 153,742.28

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Solution

The fourth proportional to 353,421.74, 530,119.86 and 153,742.28 is: 230,607.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,421.74 : 530,119.86 = 153,742.28 : x
  2. Step 2: Convert to fraction form
    353,421.74/530,119.86 = 153,742.28/x
  3. Step 3: Cross multiply
    353,421.74x = 530,119.86 × 153,742.28
  4. Step 4: Simplify right side
    353,421.74x = 81,501,835,949.68
  5. Step 5: Solve for x
    x = 81,501,835,949.68/353,421.74
  6. Step 6: Final answer
    x = 230,607.87

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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.